You're correcting him by commenting on a popular article arguing he's wrong. So it appears he has been "corrected" rather broadly and vocally

He's free to choose what to believe. He's not "insulated from his negative world view". If you're correct and introspection is to his benefit and he chooses to forgo it, it's his loss.

So I don't know what you're upset about.

I think his broader point is that people are too introspective in modern times and its paralyzing. For instance, I remember reading a blog that argues that argues PTSD doesn't exist historically. People saw terrible things, buried their children and suffered unimaginable pain but there were no concept of PTSD. He argues that its not because it was taboo (virtually every other topic that was taboo was extensively documented), so perhaps there was less introspection.

https://acoup.blog/2020/04/24/fireside-friday-april-24-2020/