Replies on Mastodon seem to come 80% from the kind of folks that panic when a conference call is ending and they realize they haven't spoken, so they just think of anything at all to say in order to participate. Or folks who submit formatting nitpicks to a code review just so everyone can see they didn't rubber-stamp approve.

They aren't offensive trolls like on Twitter, it's more well-intentioned and sincere but also totally irrelevant and annoying.

@rodhilton unfortunately it's difficult to find interesting people to have conversations with on Mastodon out in the void, but in the replies to large accounts you can find and interact with people interested in the same things as yourself. So guys like you get stuck with guys like me treating your replies like it's the bartop at the local discotheque, (or wherever you meet people out in meatspace these days.)
@Beeks @rodhilton also worth considering that, because of how federation works, my understanding is that only the people viewing a post on its original instance are guaranteed to be seeing all of the replies. So in practice people who're on small instances might genuinely not be able to tell that they're repeating already-common things in the replies.
@kemayo
Case and point: I don't see any of the @Beeks comments you're replying to
@Beeks @rodhilton