Thiel himself is gay. Surely you don't accuse him of being homophobic?

Yes, supporting somebody that is homophobic is equivalent to being homophobic himself. There are plenty of self-hating gay men out there, including Thiel.

*/s

Yeah, I caught your sarcasm. But the follow-up poster didn't seem to.

The problem is that there are people who genuinely have these opinions. You need to provide additional context, if you want something like this to be read as sarcastic.

There's no reason women can't be sexist, unless you'd assume it applies only to men.

AS for gay people who are homophobic wrt their own - Milo? It does make you question what homophobic means though, or if its application is to broad.