One of the great joys of following guys I admire like Carmack is the little smile I get when I see one of his tweets and go, "yeah, John Carmack was totally wrong about that." For example he argued that UI buttons should act on press rather than waiting for the release, and it's been a UI principle for decades that once a button is pressed you wait for the release
on the button, giving the user one last chance to back out of a destructive operation by letting them move the pointer
off the button and release. And I was like no, I don't care if you wrote Quake, or the
Principia Mathematica, don't fuck with my UI expectations.
Carmack has cheerfully admitted to being wrong in the past, for example admitting that the Saturn port of Doom should have used the Saturn's hardware primitives for a smoother experience rather than a faithful replication of the PC's BSP renderer which made it slow. When brilliant guys like him are wrong, they often are in profound ways.