Yes. Unless times have changed significantly since I left the adult industry.
The gay porn paysites would make around 10x-20x more than any general or niche type of straight porn paysite.
On the military themed gay site we had it was pretty unreal. We also had a TON of servicemen email addresses in the member database. There are A LOT of gay men in the military, or bi-curious ones that won't fess up to it and probably gay bash the shit out of the ones who are out, only because they are closet homos themselves. Sick fucks. But hey, they paid the bills!