When your comment is about how you can’t take your counterparty seriously and they’re a joke, you’re incentivizing people who disagree to just downvote and move on.

The signal you’re sending is that you are not open to discussing the issue.

It's a fallacy. Someone being utterly wrong and dismissing them for it so does not logically make me claim easily dismissible.

Yea, that’s exactly what I’m talking about.