I would love a feature that allows me to ignore new replies to a post or comment I make. Apollo had this feature for Reddit and I found it really helpful to not get notifications to threads I wasn’t interested in continuing for whatever reason (maybe it was getting a lot of off topic replies, or someone was arguing and I didn’t want to continue to engage, etc.). Essentially it would just disable notifications from a chosen post, ideally triggered as an option in the three dot overflow menu on that post/comment.
In addition to the political angle, sometimes I just want to answer a question or provide advice when that is the point of a post but I don’t want to get drawn into long conversations about it. The feature is probably less useful for posts than comments but it seems like at least some folks would find it worth while.