It's already been proven on any number of social media platforms that automated bots can spam them to death if there's no way to stop the spam. Decentralized blacklists allow an individual to choose to block such spam. Imagine someone was calling your phone all the time, and you had no way to block their number. You would end up having to change your phone number.
As for this list of great writers you're claiming I published, you appear to be confusing me with someone else. I haven't published any such list.