Why thank you mr rhetorical... If you are interested go have a look for yourself i'm not a walking audio system design book. In fact, I challenge you to find the inverse instead - empirical proof that the amp specs the author is measuring actually correlate to better sound quality.
We live in an age of lo-fi hi-bling, high consumer numbers from people who consider themselves experts in audio quality because they have a soundbar and a subwoofer don't really count for much.
I don't expect you to be convinced by me, but maybe one day you will experience some nice audio on a good system and then have a personal baseline to understand why calling something this small "audiophile quality" seems silly.