Okay, once more. Let's say I'm blocked by a poster in a thread. I make a post in that thread. Then someone quotes a previous post by the blocked person, but, to me, it just appears like they've responded immediately after my post. The topic of their post will likely be similar to what I just said, but the context will be off because, to me, it looks like it might be a response to me rather than the response to the other poster, who has me blocked. I now have to guess/disentangle/assume what that poster was saying.
Let's further say this goes on for awhile, and now there's two threads of discussion going on -- one between me and other posters and one between my blocker and other posters. Other posters have no way of understanding that I or they cannot see responses, so the discussion becomes confusing even to them.
To be clear, I'm not a fan of blocking in general, but if it's just preventing me from seeing their posts, that's fine. When it edits posts on the fly to remove quotes by others, thus removing context, it's something I'll complain about. This isn't about wanting to continue with a poster that's used a feature -- couldn't much care less. It's about not wanting to be punished by having a confusing thread left tattered because someone decided that they wanted to use a feature.