Hi Keith,
I can't be bothered to "pomposithise" over matters of audio physics I am not trained in. I am not a specialist in this area. I could provide some pseudo-intellectual babble but it won't be of any value.
As someone who has spent much of his life playing music, obviously I think these pieces of wood indeed resonate sympathetically in my room as I would not buy them.
A hifi dealer friend of mine who sells Stillpoints and comes over here relatively often to be honest came to install my Kuzma TT. Anyway, he returned a week later and asked whether I had changed the positioning of the speakers as the central image had locked in compared with the week before. I laughed and said look behind your head - I had placed 3 discs behind the seat at the central image and noticed this myself but he confirmed it. My cats knock my disc holders now and again and I only realise when I notice something not quite sounding as it should. I know you think it is all foo and that is fine. I have been open to try things including dsp, which I also have indulged in. This does something that dsp doesn't. I also have a full set of GIK panels that I have carefully placed by listening and measuring.
I also firmly believe that if you dsp a speaker to have the same frequency response in one highly treated absorptive room and the other being a conservatory surrounded by glass, that whilst the frequency response measurements would be identical since you dsp'd them that way, that the glass room would sound less good due to the harsh resonance of glass.