@nthelt @vkc there is a working way!
some form of community blocklists - well, they are 'shared blocklists' but they contain also exchange between some of the well moderated instances - see https://codeberg.org/nev/awesome-fediadmin/#basic-blocklists
some good resources also from @iftas at https://about.iftas.org/library/denylist-resources/
some instances publish their blocklists in raw, importable, form.
mastodon allows importing whole blocklists (but not automatically)
#GoToSocial allows subscribing to any blocklist on the internet and it will update in short intervals as they change.
GoToSocial also has a very fine-grained control if a post can be commented on, or boosted - including approvable requests to do so.
(btw, also some GTS devs block mastodon.social on their own instances because of "not good" moderation on that huge instance)
is it obvious i'm using gts?
also, I think terms "blacklisting" and "whitelisting" is not appropriate to use. most use terms such as blocklist and denylist.