Nonsense. It was true with HIV and AIDS, because of the very nature of the “sex” they have.
Rectums aren’t meant to be crashed with big things. They split open and bleed…which means open sore that collects disease.
If you regularly have anal sex with one partner (and your partner does the same), you have a low probability of getting HIV, Aids, or Monkey Pox. If you have anal sex with dozens of partners, most of whom you never met before that night, the probability goes through the roof.
You might want to read up about how Monkey Pox is spread (hint...it’s not just anal sex).