They want it to think even further that the fight is against jews. The fight is against muslims. The fight is against blacks. The fight is against the CABAL. So it serves multipal purposes. Deflect and disrupt to destroy the board/site.
you can use wordfilters everytime they say kike or jew change it to kke and jw, They will claim that is cooroberating a jewish conspiracy so your gonna have to just manually delete them like they say to refresh the page. You could impliment ip range bans but that could end up censoring others who use proxies/vpns but from what i have read they have specific ranges they are spamming from with very little overlap. you can ban the video from being embedded.
Well the flat earth shilling stopped because no one believed it. people called it out. The problem is the jew psyop was one to control /pol/ so it is well ingrained in the imaginations of a lot of people when it comes to basic back and forth.