It has become weaponized. If someone blocks you, they can see your posts but you can't see theirs, and there is a good chance they will block you if you get into any kind of long argument where they feel personally insulted that they are being disagreed with. Once you are blocked you cannot block them, so they will always see your posts but you can't see their their posts and there is no recourse for this, it is just is, forever. So you end up proactively blocking people so that can't happen.

Someone needs to analyze this as game theory and write a paper on it. It is so poorly thought out and implemented that it would be funny if reddit didn't have a monopoly on long form written discussions on a lot of topics.