He does point out and caution regarding overdamping a room, which is something I subscribe to. All too often too much "stuff" is added tot he room and can actually take away from good sound.
Could not agree more. If you have wall to wall carpet and the speakers are four feet from side walls then personally I don't think side wall treatments help ...they may even make it worse. I prefer a "Live front end" and a "damped listening end".
On the other hand I don't think you can ever get enough of broadband bass absorption...usually aesthetics are the limiting factor.
My comments apply for medium to big sized rooms....why anyone would want to put an ultra high end system in a very small bedroom sized room - I really don't get that.