I've got the same world view. I haven't actually met anyone truly stupid. At worst I've met people who have some sort of cognitive disorder or straight up bra

I've got the same world view. I haven't actually met anyone truly stupid. At worst I've met people who have some sort of cognitive disorder or straight up brain damage from some sort of trauma. However, I have met people who some people might call 'stupid'. So far it seems that what's actually going on is that those people were stuck in some sort of situation where they had to learn to act in a certain way to handle it. For example, if your parents are abusive narcissists, then you might end up having trouble dealing with the real world. It's not stupid, it's maladaptive. And it's what you needed to survive a bad situation.