You can be brilliant in some aspects and a delusional moron in others. The latter often happens when the brilliant feel their brilliance extends beyond their education.
As the other poster said it's not relevant how smart someone is in one arena because they can have dogshit opinions in others.
https://www.chess.com/blog/Rodgy/the-genius-craze-of-bobby-f...
I can believe that pmarca is wrong about many things, but that doesn't make him a moron. pmarca is clearly not a moron. If you have a huge problem with his opinions, writing him off as a moron is intellectually lazy and it won't advance your position.
In other words, we were both replying to a comment that did indeed call him a moron.