The Dunning-Kruger Effect is particularly annoying because most experts in a field know enough to understand how little they actually know... so an ignorant person at the peak is usually way more confident than any actual expert.

The "Do Your Own Research" crowd is usually so frustrating to me... because research isn't Googling or watching some YouTube videos, doing your own research would actually include running surveys of thousands of participants, spending years doing field work, etc.

Also, ah, I think your comments on Covid are tainted by Survivorship Bias, haha.