With the woman with 150 messages, if it was a swipe app, she had right swiped on those guys. It likely wasn't a website/app like Match where anyone could send messages.
A lot of women do find the swipe apps overwhelming because they have hundreds of men in their swipe queues and a lot of messages.
Swipe apps are ok for getting low quality dates with women in the 5.5 - 7 range. A lot of low quality dates are "one date, no sex, no second date"
@Robert28 has managed to get 2 dates, no sex, no third date somewhat regularly.
The best thing to do is to find dates through real world activity, such as approaching strangers or even weak social circle stuff like co-ed sports leagues.
Look at the chart below. Look at the line "Met Through or As Co-Workers". That line peaked in the 1980s/early 1990s as women got fully incorporated into the workforce, mainly in white collar jobs. Since the mid to late 1990s, that line dropped off big time. It's been way longer than 15 years that sexual harassment BS started. I would say that sexual harassment BS has its origins more so in the 1990s.
HR reps are often women with feminist attitudes too.
I would also say that most of "Met Through or As Co-Workers" was mostly "Met As Co-Workers". "Met Through Co-Workers" would mean that a co-worker introduced 2 people. That can still happen today from workforce interactions without sexual harassment allegations. However, I would think even that is declining as social circles in general weaken (see declines in "Met Through Friends") and also male concern about getting reported to HR for any type of female interaction. Many male white collar workers are fearful that any discussion of their personal life will end up in an HR investigation. There is an element of the fear of HR/fear of #MeToo throughout the white collar workplace today. Also now, more of white collar work is being done remotely. People are in offices 2-3 days a week in a lot of cases instead of 5 now, so there are fewer in-person interactions. It is difficult to talk to female co-workers about any non-work elements of life.
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Plenty of men will have relationships with women in their 30s/40s with pasts and even single moms. The typical 30s/40s man isn't found on SoSuave forums. The typical 30s/40s man is a thirsty guy who will settle for pretty much anything he can get. In most cases, that 30s/40s guy is getting a woman close to his own age with some combination of many failed relationships, a high notch count, and children from past relationships.