The High End and Glubglub

The High End has had many arguments in which certain types of equipment were and are considered inherently inferior for a variety of reasons: among these the single-ended tube amps which were dismissed by many, single-driver speakers, the ever-popular idler-wheel drives which I espouse, let's not forget tube amps which were practically universally dismissed in the late 60s and through the 70s, and so on. So what was going on in these varoious and ongoing debates? I sumbmit for your perusal the following gem I found in a discussion of logic: "What he (the skeptic) wants it is logically impossible to supply. But doesn't the logical impossibility of the skeptic's demand defeat his cause? If he raises a logically impossible demand, can we be expected to fulfill it? He says we have no evidence, but whatever we adduce he refuses to count as evidence. At least we know what we would count as evidence, and we show him what it is. But he only shakes his head and says it isn't evidence. But then surely he is using the word "evidence" in a very peculiar way (a meaningless way?), so that nothing whatever would count as a case of it...Might he not just as well say, "There is no glubglub?""