By my understanding some nostr apps have filtered my posts without telling users in the past. I'm not sure if that happens anymore. I also might be individually muted by choice by 400 people though, lol
I used to think mute lists were a good idea until someone pointed out to me that there could just be label lists instead. Like, instead of subscribing to the list to mute everyone in it, you subscribe to the list to get a red box and a warning message around posts from everyone in it, or something like that. But you still have the chance to notice if someone seems to be listed unfairly