Sorry, but Dave can eat shit on this. He absolutely is being transphobic, and just the same as racists have been racist whilst cloaking themselves under the guise of jokes or other non-explicit bigotry - including claims of scientific validity as there's plenty of genetic issues that affect black people very dispraportionately (the fact that he absolutely is aware of this and completely unapologetic about it is the issue, he knows he's being an asshole and doesn't give a shit about it harming others because he's more concerned with himself, which is why he wants to try to be able to tell people to their faces because he knows that if they can just tell him to fuck off that he won't be able to really get under their skin like he wants to).
As for his comedy, I watched some of his other Netflix specials. They were meh for the most part with the only memorable part being the setup and payoff of the Superman and Bill Cosby analogy. I guess I do remember turning another one off after he said some weakass joke and then started running in circles on stage laughing at it for about the 20th time. At this rate even his comedy is gonna take such a nosedive that at some point he's gonna cancel himself just because he seems intent on reaching a point where he just says stuff to be an asshole and thinks people should shower laughs and praise upon him for it (which is a recurring problem with comedians, they want accolades for saying poignant things, but don't want any criticism for when they're just not being funny or when they say fucked up stuff that society at large is trying to deal with because its a huge problem causing a lot of issues).
People like Dave are just typical bullshit assholes that can't handle the criticism they dish out. Only, Dave had an epic fucking meltdown because he couldn't handle the praise either. He wants to be an asshole, that is both adored and despised because he doesn't love himself. I wouldn't be at all surprised to find out Dave's anti-trans stuff is because he is dealing with that himself and doesn't know how else to cope with it.
I'd much rather discuss trans issues than yet another Chappelle special that if it wasn't for him saying asshole stuff to try and stay relevant wouldn't be worth talking about at all. I'm done discussing his nonsense as that's all he's intent on providing and then bitching that people call it out.
One last thing to add, if Dave is so adamant that I or others watch his bullshit then he can fucking pay people to do it. Til then he can STFU about people not wanting to bother with his tired bullshit masquerading as edgy comedy because he spews hateful garbage.