

I think part of it is about making him into a joke to prevent him from gaining the cult following necessary to be another trump. I don’t think trump supporters would care about the valid criticisms, but the idea he has sex with couches is provocative and humorous, and seems to have become one of the only things a lot of people know about him.
The attack point has to be something that both sides of the political spectrum finds repulsive. If only right wingers have a problem it makes the lefties look like hypocrites, and if it’s something only people on the left care about it’s ineffective.
Eyeliner and weak chins/beards aren’t things people on the left tend to take issue with, while white nationalism and misogyny aren’t things people on the right take issue with.
The military thing could work, but it’s not punchy enough, it’s too specific and not very funny. The couch fucker jokes are easy laughs.