Social media and not feminism is the likely root cause of the decline in families. Families are declining world wide including in repressive societies. Social media itself is likely the root cause.

Before social media people had to meet face-to-face in order to date and they had to break up face-to-face in order to end a relationship. This forced people to develop social skills at a young age that are required to form a family.

Now people can date someone they never met and break up by ghosting. They can get to a preliminary relationship without acquiring social skills. There are also online equivalents of a mate that seem good enough if you don't understand the benefits of family.

I try to avoid social media and it makes my life much more sane. It forces me to go out and socialize with people.