That would give the feature a lot more visibility than I think it should have. Like a “do you hate this user?” button appearing on everyone’s user card.. this is also a pretty rare event that does not need to be placed in convenient locations for frequent use, does it?
@sam I am fine with PMs just silently not being notified, that works for me and we can consider this V1 of the feature with the dimmed (like flagged) CSS class applied to that users posts. That will also help remind people who they have muted, too, and provide evidence of it working as designed when they enter values there.