what's the deal with the "weeaboo" hate?

>50% of 4chan is in some way related to japan. this is the best haven for japanophiles i've ever seen. Why the hate?

1) some of the hate is trolling

2) some of the hate is self hate/bitterness by the kind of otaku that have no friends/live in mom's basement

3) some of it is hate by "well adjusted" japanophiles (the kind that high their powerlevel in public, go to uni/job, have a friends/gf) against the aforementioned complete waste of space japanophiles that live in mom's basement.