I have a friend who bought a pair of magneplanar speakers which he then sold because he could hear the pianists fingernails hitting the keys in one of the pieces. I think he decided there was such a thing as too much fidelity.
In older recordings those things were masked by other instruments, sometimes even by the room's reverb or analog noise floor, or sometimes engineers just wouldn't care about soloing tracks as much because they were on the clock and studios were expensive as heck.
Now we have everyone with super low-noise digital recording, great headphones and unlimited (home) studio time. So people spend hours obsessing about things that weren't an issue before.