I'm guessing that when you're losing an argument, you like to post a response and then block the other person so you get the last word, then convince yourself that the other person was a "sealion" or something. Reddit's block system is primarily used that way. If you don't like how blocking works here, I recommend Reddit.
I personally came here to get away from Reddit's "features" like private downvotes and silencing people who disagree with you, because they promote exactly the kind of toxic discussion I want to avoid.