Not only that, not only the defaults, that way they can silence who they dont like, it just need to an account with a big score mute u and block u and u are on the black list
For exempla nostr:nprofile1qqs8wakr9493685t725kh2ltgwke4hs400fk8kymslak8eh3g42c3zqppemhxue69uhkummn9ekx7mp0qyvhwumn8ghj7urjv4kkjatd9ec8y6tdv9kzumn9wshsz9thwden5te0wfjkccte9ejxzmt4wvhxjme03x0ggy appears to me allways like a dangerouse post, and i never mute him and their posts are sensored even without my choice to sensor him