Yeah when they fixate on sex it generally results in a bunch of behaviors and personality traits that make them unpleasant to be around and often make other people (particularly women) dislike or even fear the idea of sex with them.

I also honestly think a lot of it comes down to homophobia. I think there's a lot of closeted or Kinsey 3+ bi men that are prevented from being happy with a male partner and even more importantly it keeps straight men from pursuing platonically fulfilling emotional intimacy from other men. I often deal with sexual transference behaviors out of male patients (when I try to help them emotionally they develop sexual attraction) and it can be difficult to both find a male staff member to model appropriate nonsexual emotional intimacy to them and to get the patient to accept the healthier experience / teaching.

TLDR there's a lot of things I would like to do to help solve the male loneliness epidemic because it's a very real thing but I'm AFAB and NB at best and 90% of the work needs to be done by men helping other men, so I'm functionally helpless to do so.