Perfect Speaker Placement - Put next to the back wall as much as possible.

I thought it was a good article mainly talking about small monitor speakers in a nearfield listening position with bits about larger speakers thrown in. For small speakers, I would suggest his recommendations. I have done it this way with good success. But for larger full range speakers, you need the speakers out from the wall, way out. There are many articles on speaker placement and for example the Cardas method, he states recommendations for planer speakers and for box speakers, nearfield or not, and for square vs rectangle rooms.
The Wilson duette speakers sound very good up against the wall whereas the Wilson Alexia 2’s would not.
I also agree with audio2design and many others on these forums: never listen to millercarbon. I think it’s outrageous that MC compares his low fi system with Mike Lavigne’s system, that’s an embarrassment to Mike.