As a half-spic i can confirm he's probably mexican or spanish, though one of his replies to another of the homos had a wrong spelling that is very common of inexperienced foreign speakers (wrong verb conjugation) so he could also just have beaner roots and live in the US... or it could just be a typo.
Motherfucker definitely speaks some form of spanish, but his is so informal that it can't be Foreign school-taught, he's native at best, semi-fluent at worst.
Edit: Nope he used "Padre", mexican confirmed, no other latino country uses that beaner slang