Yes but sometimes people feel a bit too vulnerable to get biffed in the face. You can say well you should not involve yourself in a robust dialogue.
I've had that said to me a few times - so you crawl off to lick your wounds , whilst the shit slinger purrs contentedly.

But every time that happens your heart hardens a little bit, and mudcat feels less like a meeting place for human beings and more like a a gang of fuck ups hiding behind computers.
I noticed a load of right wing Americans depart soon after I joined. Not for what I said, but they got pissed off with being the butt of judgemental middle class types whose idea of ethnic diversity was watching a Sidney Poitier movie. In their own country the Americans felt like normal citizens like the Trump voting ones. But on here, they were the source of the River Styx.

If you only talk to people who agree with you - you won't learn much.