You are of course entitled to your opinion. Perhaps you have outlined the technical basis for your opinion in detail elsewhere. As a stand alone statement, however, what you have said is an ad hominem attack, not only of Bob Stuart, but anyone in the industry who hears MQA as a step forward in digital sound reproduction.
As far as PRaT is concerned, I agree with you that it is only partly descriptive of what is important in home music listening experiences. Thank you all who are still using the phrase and its acronym for fleshing out a definition. If the term works for you, use it, but I think that for anyone who has become interested in high end audio over the past 20 years, it's etiology misses the mark. We could serve these more recent acolytes better by providing actual descriptions of what we hear that helps us suspend our disbelief and invites us to engage more emotionally with music at home.