To say that the wrong measurements have been made for decades would be to take the easy way out. It might be far more appropriate to say that in the absence of the "right" measurement, too much emphasis has been placed on the "wrong" measurement.
I can hang with that, but IMO the latter aspect, 'too much emphasis' has been going on for too many decades. This has been a problem in both amplifier and speaker design, in terms of jumping the gap from 'hifi' to 'real music'. The problem is that human hearing rules take a back seat in the generation of many specs and test procedures.