>Learning concepts like branch prediction, out-of-order execution, pipelining, register planning, caches, memory management is far far more important than Lexing/Parsing/Intermediate Representations and SSA.

These are incidents of technology. If this were 1970s you'd be talking about in place sorting because we're stuck with tapes for anything past a toy compiler. Something that would be useless in a decade.

The point of education is to teach you how to learn, not how to collect stamps.