> Real experts can explain their position plainly. That has not happened here.

It has, over, and over, and over. There is literally a book on it. https://ifanyonebuildsit.com/

I read Bostrom's Superintelligence: Paths, Dangers, Strategies in 2014. It was interesting, but not terribly persuasive. Does If Anyone Builds It, Everyone Dies contain arguments that would be new to me after reading Superintelligence?