You’re right that liking your ass played with doesn’t make you gay (unless you want another guy to play with it), but if a guy enjoys and desires having sex with a woman, he’s certainly at least bi. Plenty of closeted men have had sex with women, but not because they enjoyed or desired it. Likewise, if a guy enjoys or desires sucking cock, rimming another guy’s ass or getting fucked by an actual dick, they’re certainly not straight. It’s not the physical act itself that makes somebody gay, it’s the enjoying and desiring it. Many gay-for-pay porn stars look bored out of their minds having sex with other guys because they’re not enjoying it. They have no sexual desire for it. Peachy doesn’t seem to have any desire for the guys he collaborates with, which means he’s straight.