Does it really matter? At the end of the day it's just porn.
This kind of discussion gives the impression that people think porn for gay people is only valid if it is performed by a gay person. It's not. You can feel horny for someone regardless of that person's orientation.
I don't really understand why people care so much if the person is gay, bi or straight. It's a person performing sexual activities for someone gratification.
In his case it consist mostly of videos of him jerking off, while sitting on toys that are bigger and thicker than my arm while the muscles throughout his body contract, spasm and tense up involuntarily due to the intense orgasm.