Been with many Mexicano men and there's this perception on their part that sucking is not gay but accepting semen or precum into your mouth is, hence the spitting. It's difficult to break these perceptions and I've purposefull cum in their mouths without warning, some swallowed while other backed away and one actually spit my cum onto my stomach in disgust. If they let you fuck them though, the ones I was with didn't mind me cumming bareback inside them. Machismo is so toxic.