A woman named Amy Mastrine has no credibility in assessing what is or what is not an alpha male.
At any given time, most men are beta males.
There was a time when the social constructs in many Western nations incentivized having a family. That hasn't been true in the United States since some point in the 1960s-1970s. Even compared to the 1970s-1980s, there's less incentive now for a man to live a family-centered lifestyle.
Very few alpha males in the United States and other Western nations now are men with wives and families. There were more alpha males with families in the GI Generation (1910s-early 1920s births, the guys who fought in World War II), and the Silent Generation (late 1920s-early 1940s births). These men in most cases grew up before the Sexual Revolution took hold and had a much different world view than the younger to middle aged men of the present day.
Right now, men with children under 18 at home are mostly either Gen X or Millennials. Both have dealt with unhealthy mating environments, although most Gen X'ers entered the mating marketplace in the 1980s/early 1990s, when it was healthier than what the Millennials faced after 2000. However, the family courts have been anti-male for the entirety of Gen X's time as sexually mature adults.
Since the start of no fault divorce in the early 1970s, the probability of a divorce at a given time during a marriage has been quite high. Over half of marriages do end in divorce at some point during a roughly 20-25 year period. Divorce statistics can be challenging to interpret and there is a lot of confusion out there surrounding them. The threat of a divorce, facing the anti-male court system, and having to co-parent with an unpleasant ex-wife is a reason for a rational male to avoid family life.
Alpha and sigma males have evaluated the situation and determined that a family-centered lifestyle is too risky for them. They have shifted their behaviors to pursue shorter term sexual options in most cases. Greater Beta males are still having families and many of them end up facing negative consequences in family court. Lesser Beta males are discarded by females and are some variation of incel/MGTOW. Women don't care when a man goes MGTOW because they never wanted those men anyway. Men only become MGTOW after a quantity of rejections piles up.
There's no way to make much of a case that a family-centered man is an alpha male. There are some smaller exceptions to the rule that can be found, but that's about it.