I've never tried it, but there is the manage history option where you can delete entries from your play and search entries. Also there is the pause history option - but I agree, these are buried and unappealing options most people won't bother.

Interested in this as well. Replying in the hope that I'll get a notification if a reply comes in. (Still learning this new strange world)

Random question - is it possible to follow a user?

That's awesome, so glad this helped.

I actually shelled out the extra cost for a family plan for my wife and son (as well as my parent's Sonos) to not need to deal with stuff like this - but I really think this should just be "an option".