I agree, but when I raise that issue (don't know what 'good sound' really is ) I prefer to say "people don't know what to listen for". That always invites the "why not?" response. And then I get to say, "because nobody ever took the time to teach them!"FWIW, while we all tend to preach...."let your ears decide", the truth is there are a fair number of supposed audiophiles that really don't know what 'good sound' really is !
People don't evaluate live sound! (Except for, "can you hear me OK in the back?" ) It's LIVE, for God sake; what's to evaluate? Becoming a skilled listener of reproduced sound requires some degree of instruction, which must be given in real time ! I have provided friends with 'what to listen for' lists in lieu of my actual divine presence -- however that was in connection with tube rolling, and using the same equipment as my own. They had no trouble hearing things to which I directed their attention. The reward for me, believe it or not, is that when they were done listening, they choose a different sound then I would have -- but now they had total confidence in their choice! Lots of people have sharpened my listening over the years, but they tend not to volunteer. So when you're at a show or some other venue and you see some old fart listening intently to some speakers, ask him/her to tell you what they hear. Occasionally you'll strike gold. Most of the time it'll be that guy who once said, "I don't know anything about Art, but I know what I hate!"