Random meta: I have always disliked the "Mute this conversation" feature on both Twitter and Mastodon. The problem is it mutes an ENTIRE thread, all the way from the root (I think??), whereas when I want to use this feature it's usually because a sub-thread (IE, one reply and its sub-replies) has gotten out of hand.
The feature winds up being a weird trade: "I'll stop bothering you about this asshole's reply thread if you'll agree to mute notifications on this other thread you made on purpose"