The problem is that most audiophile behaviour is driven by emotion and psychology, not by facts and evidence. In that respect it's perfectly analogous to religion—and we know how futile it is to challenge religious thinking with facts and evidence.

The underlying frustration is that objective (measurable) and subjective (unmeasurable) improvements in sound quality could ever be placed on equal footing with each other. It just wrecks my brain that people would ever spend a dollar on improvements that has an unmeasurable or negligibly measurable impact on the when there's still so much opportunity for substantial, measurable improvements.

If you want to improve your audio, focus on speakers, speaker placement, room acoustics, bass management and in-room calibration. Most everything else is relatively marginal (e.g. fancy amps, fancy DACs) or negligible/unmeasurable (e.g. fancy wires).

For most people with mid+ range audio gear, the number one upgrade they can perform is almost always to add targeted sound absorption to their room, not to change any of the electronics.