You are a leftyblogger.
You write a post that is so chock-full of long-debunked shrieking points that there’s no room for any information of value that you might, improbably, know.
What do you do?
You delete their substantive and fact-clogged comments about the time they start to make you look like the un-informed naif you are; when even that doesn‘t work, you declare those who disagree with you “propagandists”, and take your toys and run away.
Not that anyone should expect better.