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With respect to this forum and the topic under review the argument is iron clad.  I did not speak in generalities.  My points were very specific and clear.

I did not say you spoke in generalities, and being specific and clear is of course not enough to be correct.  Your argument is invalid simply because you are making a universal statement about sound quality but in principle cannot have complete knowledge of sound quality experienced by anyone except yourself.

By the way, it's interesting to read what a well-regarded amplifier designer says about how much power is needed to drive typical speakers to "normal" listening levels without distortion when playing music.  For example:

You will find that conventional, direct-radiator (not horn-loaded), magnetic speaker systems of around 90 dB sensitivity, require around 500 watts/channel to avoid clipping.  More power is needed in larger rooms or if you like to play your music more loudly than most.