It is actually a little disconcerting that issues such as the futility of fixed-filter, fractional octave based equalization were identified by such credible folks so long ago.
Oy.
We are privileged to stand on the shoulders of giants.
I remember the interviews mentioned in one of the linked pieces... Dan Healey, John Meyer and "Dr. Don" Pearson (not mentioned by B&K). They talked about "time" in a way that I immediately internalized. On the input side, Ed Long and Ron Wickersham were talking about time, too, with their pressure boundary microphone. All had a direct impact on my way of thinking about audio in general and loudspeaker systems in particular.
I'm still learning, and I find the writings of older giants to make perfectly good shoulders. It's a great time to be in audio.
Have fun, good luck.
Tim Mc