There was no need to "well actually" that, as it is the same point the parent was making: that money (and UB abuse) is why the tuned compilers now exist.
I interpreted differently, as if being an inherent property of how C and C++ were designed.
> UB abuse
That baseless assertion makes no sense. UB is a property of the ISO standard and has no effect on how compiler vendors implement the language. In fact, UB is intended to enable vendors to be free to choose how they implement that behavior. So why do you believe that the freedom to pick how you implement something hinders any development effort?
Actually lots of money spend across compiler vendors in the last 30 years, and UB abuse, as C compilers were pretty lame in the early 80's.