I don't think conservatives are kicked off of anywhere. I don't think anybody who's making sincere debate arguments is kicked out of anywhere.

What's happening is that people who copy-paste/reshare conspiracy theories without even bothering to read the wikipedia/snopes article first are being rightly downvoted.

I think of Trump's fan base seems more like a religious minority than a political group. And like any religious group debate really isn't the answer to fantastical beliefs.