You've literally just explained what the male loneliness epidemic is and its causes. It's why it's specific to men and a women not understand the nuance here is no diffeeent the people not understanding toxic masculinity.
There is actually some overlap in these two issues and it's one of those rare moments where it's women who need to shut up and listen because it's not about them.
The loneliness epidemic is not a personal attack on women anymore than toxic masculinity is an attack on men. Ultimately, the loneliness epidemic is about reduce the male suicide rate. Anyone who takes it as any attack is misinformed and borders on a self absorbed asshole. Might as well just tell these men to kill themselves.
The solution isn't for women to be more promiscuous because that doesn't fix the problem and isn't what anyone is suggesting is regards to this issue.
Casual sex does not cure loneliness for the majority of men. It may offer temporarily relief but even this isn't true for all men.
If a black cat crosses its path food will stick to it for the next seven years.