I don't see what any of this has to do with C++, especially modern C++. The only "low-level" detail from lower level systems course I find that is still releva

I don't see what any of this has to do with C++, especially modern C++. The only "low-level" detail from lower level systems course I find that is still relevant on a daily basis is cache-alignment - which I doubt they would cover in a 101 course anyways. Almost everything else either 1. the compiler does better or 2. you'd have to know how to fight the compiler to achieve. Anything that would let you achieve 200-1000% performance gains in Python vs C++ (besides, again cache alignment) is likely not something you would cover in a intro level course. (I know C++ is faster Python, but that has nothing to do with "accounting for the hardware at the very architecture level")