So if ASAP Rocky grew up in Houston it would be ok for him to use that style of music? But because he didn't grow up in Houston, he's not allowed to make that style of music? He's confined to only sounding like he's from New York?
I don't hear this "carter" guy taking shots at Drake. Because Drake is from Toronto, but his music is heavily Houston influenced and he admits it. But we all know he knows better than to commit career suicide by calling Drake out.
Where you grow up doesn't define what type of music you're allowed to make. ASAP could have very well grown up listening to Houston music, and that's what influences his music today. And for anyone to say he takes credit for the style is uninformed and doesn't listen to his music. Because he DOESN'T take credit for the style, and pays homage constantly in his music.
Stop worrying about the next man, and worry about perfecting your own craft. When someone else's music bothers you so much, then that means that there is a bit of jealousy and envy there.