Let me make it clear: All of those people individually chose to mute/report the npub. There is no "blacklist."
Discussion
You could have just asked what "blacklist" means instead of insulting me with incorrect bullshit.
Whitelist: a list that grants access (in this case, something like a follow list that lets posts into a home feed)
Blacklist: a list that blocks access (in this case, something like a mute list that removes posts from a feed)