I just got an email notification that you replied to this post, so it looks like the default setting is to subscribe to all. I tried the "mute" setting just now and a banner said that I have been unsubscribed from notifications on this thread. Went back and clicked "unmute" and notifications are restored. So it seems like the "mute" function is to mute notifications of activity on the thread, not for individual posters. I haven't been to my profile and settings yet so not sure how/if individual posters can be blocked.
So it looks like we just block the notifications. Not good for me. 😐
