A feature that each individual user can use to mute spammers is a good thing! If someone is posting nonsense and you choose to censor it from your feed it remains in others & onchain.
How does the users Memo profile Dashboard Page Feed and the Personalized Page Feed not already accomplish this.
For example, if the user tends to browse 'new' mostly and there is a new annoying user clogging the feed posting repeated garbage over and over a "mute user" option clears that up
Well, I'm not so sure about that. What exactly is the personal feeds algorithm anyway? I mostly always browse by new and I wouldn't mind being free to remove clutter