Ok it turns out muting "nostr" absolutely breaks it in non-expected ways. Notes containing nostr.build url images get muted and any note quoting also causes a mute since it includes the "nostr:" uri string.
Discussion
I mean.. isn't that what was supposed to happen?
Nah, the expectation is that only things that get rendered as text should be muted. If a mentioned vanity pubkey contained a muted string by some odd chance, should the note also be muted?
And should it not apply to just the word as is? Prefix/suffix matches should use wildcards imho.
See: Scunthrope problem
it mutes anything that contains the substring βnostrβ most likely which is stupid