He's gotten way to used to the abuse...
Idk what this is like but that's an extremely funny way to try and check if you're gay XD
He's young and unaware of the spectrum of sexual orientation so he just tried to use a caveman level test to "prove" he's not gay.
What next? He gonna watch gay content and then say no homo after lol
I do hope he can accept himself sooner rather than later. No one should have to feel awful about themselves for who they are. Peace and love and stuff <3