(barring instances with hidden blocklists)
Apart from setting up and running your own instance to defederate*, there is no way of making your feed filter out the subset of users from dbzer0 who think they should spread their instance’s values of AI content across all parts of the Fediverse, whether or not it is welcome there. If somebody could set up an instance with this community’s values and filters in mind, I imagine that would be helpful to many of us. This instance could be adapted to defederate from other AI-spreading instances as well.
Fediseer, the default web tool for instances to document issues and endorsements of other instances, which incidentally is maintained by the admin of db0, shows that lemmy.dbzer0.com has received no censures whatsoever from other instances.
*or instead manually blocking every user from dbzer0, which would be futile as they continue to gain users
[EDIT: Since many people seem confused, here is how blocking an instance works:
Given that instances X, Y, and Z are all federated with each other:
If I am hosted on instance X and I block instance Y but don’t block instance Z, users from instance Y can still post/comment onto communities hosted on instance Z and I will still see these posts/comments.
Only by defederating from instance Y would the content made by instance Y users that is posted onto any instance become wholly filtered out for users on instance X.]
Is everybody on the Fediverse incapable of reading? I’ve already explained multiple times in this thread why blocking doesn’t work and/or isn’t relevant
Block communities, is what I said, not the instance. I've successfully blocked a bunch of communities (such as the community on my home instance dedicated to AI shitposting). I don't know why you seem to have trouble doing the same.