More traditional societies like Spain, Italy, Greece, or Latin America aren't going to see as big of a change. You have a place dominated by the Catholic or Orthodox Church, traditional mores will be more prevalent in the modern day.
In the U.S. I make a point to avoid Italian, Greek, Spanish (from Spain) and a lot of Latin women due to their being difficult. I wouldn't be surprised if things haven't changed much. Miami obv is pretty heavily Catholic.
Miami might be heavily culturally Catholic due to the Hispanic/Latino population. I'm not sure how much Miami's Hispanics/Latinos are practicing Catholicism by attending Mass weekly/most weeks. Participation in organized religion has been dropping.
Among White women, I can't imagine a lot of the younger (40 and younger) Italian-American or Greek-American women being big time practitioners of religion either.
Dating after 30 was definitely easier in prior decades.
Really? Which decades? You might have a case for 2 decades (1990s and 2000s). I can't think of a time where dating was great for people 30+ (thinking most about 30s/40s people). The market for 30s/40s singles has always been a bit thin. Let me cover the periods of time since the end of World War II.
1945-1975: In this time, age at first marriage at around 20-23. People were still big time religious practitioners during this time. Almost all of the Christian faiths are against pre-marital sex, so a lot of people got married in order to have sex. The Sexual Revolution started during the 2nd half of this period of time. Even with The Sexual Revolution, most people still got married young between 1965-1975. Look at the female notch counts prior to marriage in the 1970s below. During this time, there simply weren't a lot of people still single at 30. So if you were a 35 year old single man in 1970, you didn't have a lot of options. Most 35 year old single men in 1970 also weren't above average salary earning white collar guys like Pete Campbell (b. 1934) of Mad Men. The typical 35 year old single man of 1970 was more likely to be some blue collar reject than a suave white collar guy.
No fault divorce entered most states between 1969-1975. The divorcees of this era were Silent Generation (late 1920s-1945) women with physically and/or emotionally abusive husbands and likely ~2 kids. Not a great option. The Boomers were either too young to be married between 1969-1975 or the ones that were married hadn't been married long enough to see their relationships experience a drop off in quality that could not be fixed.
1976-1989: This is when the Boomers started to affect the sexual marketplace. The 30+ divorcees of this era were mainly Boomers. Even though the Sexual Revolution had been more ingrained in the culture by this time, marriages were still early in life. Most women were married before age 25. The market for 30+ singles would have still been thin during this time, though it probably would have been better than the 1945-1975 time. I don't think the typical 35 year old guy in 1988 would have been in a great position.
There were lot of guys like Jim Nantz during this era (see below). In total, Jim Nantz would have been representative of a white collar male of this era, but less representative of a blue collar man. Regardless of work collar, many Baby Boomers got married during this time because they believed in the fairytale of marriage because marriage worked in their parents' generation (the GI Generation of 1910s-early 1920s births).
Who is Jim Nantz? Jim Nantz is a sportscaster who has worked for CBS Sports since the 1980s. He has had numerous high profile assignments at CBS. He has been CBS' lead play-by-play announcer for the NFL since the 2004-05 season and has provided play-by-play for 6 Super Bowls in that capacity...
www.sosuave.net
The 1965-1985 period when a Boomer could be an average guy and have a decent experience in the mating environment, unlike Millennials 2005-present.
1990-1999: The 1990s are the first full decade I can remember. I started to participate in the mating environment at the end of this decade, though I was a junior in high school at the end of 1999.
In the 1990s, people were still getting married before 27. The 30+ single person became more of a thing in the bigger cities.
There were even media depictions of 30+ singles in bigger cities. Seinfeld featured 3 men and 1 woman who were 30+ and single in New York City apartments. Sex and the City debuted in 1998 with three 30+ women and one 40+ woman single in New York City apartments as well. The characters in Seinfeld and Sex and the City are mainly white collar workers. George & Elaine in Seinfeld worked office jobs, and all the Sex and the City women were white collar. Newman in Seinfeld was a USPS mail carrier, which is considered a blue collar job.
The 1990s might have been the best decade in recent times for the 30+ single, though I do believe the market was still thin.
2000-2009: Age at first marriage became older during this decade and online dating (started in the 1990s) became de-stigmatized during this decade. In the earlier part of the decade (2000-2004), online dating was novel, starting to become de-stigmatized, and actually somewhat effective (in-person arranging of dates was still better). The latter part of the decade saw Facebook become available to the general public (2006) and the introduction of smartphones. Social media and smartphones made the late 2000s worse and continued to affect the mating market after 2010. By the 2000s, staying childless later in life first became noticeable, then accelerated after 2010. The woes of online dating became apparent by the late 2000s, as women on Match, OkCupid, and Plenty of Fish started to have their inboxes bombarded by thirsty guys. This is what served as motivation for the development of swipe apps.
2010-present: I don't need to go into much detail here. Incel and borderline Millennials became more of a thing. Notch counts got higher, women got fussier with the higher number of options that they realized starting in the late 2000s with dating websites but continued with dating apps into the 2010s. Women got less receptive to in-person approaches with more earbuds in the gym and outdoors. Things definitely got worse for the 30+ man in the 2010-present era despite more 30+ women being available.