Inexperienced ears / brains at assessing high quality audio are relatively insensitive and easily deceived. It’s like anything else, if you are new at it, you only hear obvious stuff ... like changes in treble and bass. Your brain thinks, more detail, that must be better... I couldn’t hear that before. like an overly salty snack. Or bigger thump... must be better.
The ear / brain combination is incredible, but must be trained. Look at the eye / brain of a radiologist. Everyone has seen an X-ray of something and the doctor says... see this joint, the cartilage... see this little scare tissue area between this fuzzy area... which of course is solid bone. You see clouds... Same thing. What begins as fuzzy, becomes easily seen and appreciated with experience.
You must train your ears and your brain. And as you do that your tastes will change because you realize you’ve assembled and have been "eating potato chips" instead of a Beef Wellington or Truffles Risotto.
It takes years or decades of training. The best way to get there: listen to lots of live acoustic music, listen to lots of system and try and comprehend the nuances. Read, read, read. Starting with Robert Harley’s The Complete Guide to High End Audio. This will give you the terminology and point out all the different aspects of sound and music and what to call them.
It's like the saying goes Eskimos have fifty words for snow. While probably not true... it serves the point.