The sheer number of men who suddenly have no support in their life because their relationship has ended, that soon struggle with suicidal thoughts should really point to the first thing you said. Men and women are socialized differently as children and this is one of the most common results when we reach adulthood. It will take an enormous shift in society and ingrained values to fix that
That second point, yeah, women don't need to get married to survive now. My grandmother couldn't have her own bank account when she was a young adult, and banks would have laughed her out of town if she wanted a mortgage. My parents got married young because that was still kind of expected, especially in rural America. I haven't dated in years, because it's frustrating, and I have been able to, and lucky enough, to buy a home on my own finances. That's not high standards, it's just that I didn't need to get hitched to have financial stability
I'm not a cis man, but every man I've dated has had "friends", but not people they can really talk to. Like, one guy I dated had a really big social circle and they regularly had gaming events. But he didn't text or talk to anyone outside of planning and going to those events. Others had maybe one friend that they hung out with outside of work.
It is sad. And it was jarring when I was young, because I had lots of friends I could turn to on a bad day or for something more serious. It makes me so angry with "the patriarchy", because it isn't just keeping women down, it's also hurting and sometimes killing men.
I had a cat die a very painful and sad death right in the veterinarian's parking lot. I was completely devastated, but my poor boyfriend kept trying to hold back his tears because he "needed to be strong" for me. Bitch no, cry with me, that was super heavy. I'm going to carry that death with me until I die, and not just because my cat didn't deserve that. It's not fair for men to have this expectation that they need to hold back expressing emotion so they appear strong. (that particular ex also has a fear of dying, so he really needed to and should have felt free to express himself at that time)