The issue is the fediverse is bleeding through via mostr.  People on the fediverse side don't understand that the 'nazi' content is actually from the fediverse, but they don't see it, because their instances don't federate with that part of the fediverse.  Soon it won't matter, because there will be people of all types on all sides.  Nostr just hasn't figured out how to handle unwanted content yet(mostly). But it is going to interesting once people realize how the nostr protocol routes around 'blocks'