I quit trying to explain things to OP because it's like Chinese to these guys. Their mental model is "I will focus on me 100% of the time, and then I'll be happy. Everyone should do the same, and then we'll be good." That view is influenced by other emotionally damaged men, horror stories of how some guys got shredded in court (but as I've said before, I'm not here to defend divorce courts, as they have some big problems with how assets are divided in many cases), and these weird beliefs about how "women have changed since our mothers and grandmothers." I find that last point really kind of funny because they can't say exactly when women changed and why. What I suspect is that these guys have perhaps watched a little too much Leave It to Beaver, ignoring things like the Victorian Era sexual repression was the response to incredible STD outbreaks laregly due to rampant prostitution, how shotgun weddings weren't an uncommon way of handling premarital intercourse, and how people have always experienced challenges in their lives. But rose-colored lenses are how many people choose to view the world, so it's not surprising when those expectations aren't met in the real world.
I view this response as childish, as you seem to, but I am willing to take it a step further. This is just the expression of victimhood as part of the snowflake culture that surrounds us, and it's rather intolerable. These men and their ideology are largely a derivative of the question, "Why don't girls like me?" Since they can't face the idea that they themselves are the problem, they have to suggest that all women are the problem. It's no different than a fat girl who asks herself why she can't get a boyfriend, a malicious bitch who can't keep a man, or any other person who has a truly off-putting character trait: The problem isn't everyone else, it's just you. You can either accept that, change something about yourself, and improve, or you can't. If you do, there are lots of possibilities that open to you. You will have the opportunity to date around, attract women that you want to attract, and, if you choose, marry one to establish a life together. If not, then all of those doors are shut to you because you are your own limiting factor. You can choose from other things, same as the man who doesn't have this character flaw (virtually no one has to choose between getting married and making money/having a career that you want, having a hobby, or whatever else, as that's just a false dichotomy). By merely being objectively better, you open more possibilities to yourself. But these guys really don't want to see this about themselves, so they turn a blind eye and repress it, rationalizing their behavior by establishing an echo chamber for themselves. Oh well, you can't make people learn.