I think you are onto something here at least for a fair number. It describes my activity for maybe a decade even though I should have known better.
A reviewer or three say tubes go better with ESL's even though they measure worse. I have ESL's look around and purchase second hand a tube model with a good rep. Heck it does sound different, and does sound better. I would have assumed the pro heard better than me or had experience of more than me. So now I can at least hear some of what he does because I have actually done so. Now I know why the sound was different and it is no mystery. Then not so much. So over time a handful more experiments (and not all worked out some left me scratching my head) I have more experience something like those guys. I hear even smaller and mostly real differences. I manage to hook up with local audiophiles. We are all trying different things, giving 'reviews' and getting broader experience.
I know among my circle of friends we freely loaned gear around excepting speakers (just because they were too big). So we might not feel like one of the pro's, the reviewers or the designers, but we felt part of a community with enough experience to converse and take part. Humans being humans we were ripe to be influenced and hear things that unlike earlier upgrades were maybe not so real. It was like becoming a more advanced member of some cult. Among the results were people eventually splitting off into their own particular areas. Tubes, then triodes, maybe even SETs. The SET was the holy grail for which people compromised nearly all the rest of the gear to make it work. You had only certain speakers that would run on a few watts. Best not to like heavy metal music. Others become acolytes opposing the demon crossover. So you need the one driver speaker. So one guy I know ends up with a one speaker, aluminum cone Jordon which is a small speaker with special needs not to sound bright and thin (which it actually was) so everything else is configured to keep it from being awful. So in time some of those guys go in so many incompatible directions our gear couldn't even be swapped around. Each person thought they had now highly tuned their system to a knife edge when in reality most of us had gone so fringe in some area everything except the one thing (whatever the one thing was) had been sacrificed to feed our ego of being so perceptive and special.
Even then, I'll be dam*ed if I could ever see the day connecting two ends of a USB cable could become an entire batty community of weirdness so disconnected from the signal coming out of the DAC (which is perfectly good with a sub $10 USB cable). Perhaps never before has such a simple, highly effective, nigh on perfect audio connection of practically no cost been perverted by such weirdness. It is fascinating in the extreme.