Branch prediction as a concept is not a finer point of a CPU design - sure it's up to you to learn about it or not, but understanding the basics of writing CPU friendly code is really not hard in the slightest. AI workloads are some of the heaviest around at the moment, so a little can go a long way.

I am entirely self-taught in CS and I know what I know, I'm not inflicting it on anyone else I'm just saying Jim Keller doesn't do these very often and I want to hear him in more depth.