I guess I have to reject the premise of the article as such.
Most programmers have an intimate understanding of CPUs and sequential programming because they grow up writing code for the CPU
This is clearly not the case. Most programmers know next to nothing about CPU and rely on the compiler or the runtime / VM to make “computer go beep boop”. And they are fine with it, because they don’t feel like they need to know either. Hence, the premise that " everyone should know about GPU programming" cannot possibly have merit.