I think it is also implicitly biased. Back in the 80s on Apple ][ (Both Johns started on Apple ][), whoever wants to develop competent games would switch to as

I think it is also implicitly biased. Back in the 80s on Apple ][ (Both Johns started on Apple ][), whoever wants to develop competent games would switch to assembly ASAP. Whoever could not figure it out would drop out eventually. Eventually, whoever managed to join professional gamedev (be it Origin or Softdisk) HAS to know a lot of low-level stuffs and be fluent to assembly, Pascal and perhaps C. Example: Carmack had to code the rendering engine and network engine for DOOM, probably singlehandedly. Today's world is a lot easier so more percentage are retained. It's a lot easier to write C#, use Unity and get out a demo in say a few days/weeks. No low level programming skills are needed, at all. This creates a bias when we compare "classic professional programmers" versus "modern professional programmers". They simply don't need the same set of knowledge.