Indeed. I would even dare to say most of /sci/ don't want to be associated with anime at all.
Ignore /b/, /pol/, r9k and all the weeb stuff and you can find some properly good communities which remind me of the old internet. /sci/, /mu/, /biz/ and /fit/ can all have their moments from time to time.
I vaguely remember a poster having digitised his entire niche Serbian breakfast cartoon collection
A lot falls through the rather wide cracks in legal distribution methods
Good luck doing that on 4chan
Go away
Until then you can use some 4chan boards if you ignore all the weeb shit.