LOL! No, you don't block people for the same reason troll accounts don't. And for the same reason you insincerely applaud critical comments and make put no effort into backing up your arguments or addressing challenges to your posts.

You don't care how people respond, you don't care about debate or discussion. Your only purpose is to push your talking points and get reactions. If you blocked people, your potential audience would shrink and you'd look like a complete hypocrite.

After all, anyone pushing intellectually and morally indefensible positions has to pretend they're all about "freedom of speech." It's the only defense they have given that facts, integrity, and ethics are not on their side.