Little Jack Horner
Sat in the corner,
Eating a Christmas pie;
He put in his thumb,
And pulled out a plum,
And said, "What a good boy am I!"
---Mother Goose
Audiophiles have been "wasting" great equipment long before room treatments became the next best thing to market to the insecure. Fear is a great incentive.
Getting so wrapped up in it to the point where one says "Toole has a room like mine", when it’s the other way ’round, and posting shots of recording studios that one has copied doesn’t make them one of the big boys of audio but just someone who now has invested so heavily into it he needs to have validation in his choices by forcing them on others as there’s comfort in conformity and herd mentality.
This constant, nagging insistence goes beyond congenial advice. Long ago I experimented with blankets over my TV screen and found better center stage focus and clarity. Mounting it 2’ further back on the wall bettered that, negating any need for a blanket. Trying quick ’n cheap fixes to see if results warranted anything else proved futile: no need for further investment. Having a recording engineer physically check out my listening space (not looking at a graph) and pronouncing my space good enough was all I needed to hear.
There’s plenty of online and in print discussion of improving the sound of your system simply by moving closer to it. Get your speakers a bit further out into the room and/or move your listening position a bit closer. If your room is on the smaller side like mine is, you’re most of the way there by listening in the near field.
Speaker placement and toe in can do wonders to improving things. This is age old advice that’s worked for... ages. The acoustics in the room can be as much as 50%, not at least that amount. Nothing would work if that were the case. There’d be no great systems of the past or memories of hearing them. Again, fear sells. With all the links the OP provides, it makes me wonder if he’s getting some kind of kickback for it and his constant, hard sell approach.
All the best,
Nonoise