Just because someone LIKES japanese music he ISN'T a weeaboo.
When he is OBSESSED with japanese music THEN he is a weeaboo.
You were saying it like just because I, let's say, like a game from japan that I'm a weeaboo.
As long as he/she/it/I isn't/aren't obsessed with it, I'm not a weeaboo.
It's hard to get what you mean, seriously.