Yes, I agree. The distortion on the recording is not changeable, and if it is bad you have little option but to pour gravy on it to cover up the problems. But mastering engineers usually get it right, at least that means they accomplish the sound they want. The recording is a work of art in itself, has to be taken that way, including the mix and mastering. Just like occasional bad trumpet solo, occasional bad mix. Some music is deliberately mixed to sound a certain way, that is exciting and intense to 14yos, but not good to 50yos. You can't blame them for pleasing their customer. When the recording is good, it is nice to have system with minimal distortion to hear more details. When the distortion on the recording is high and/or unpleasant then adding pleasant distortion is usually helpful. I think we are in agreement about that? My only difference is that the producer is an artist and deliberately chooses to make pop sound like what we would call bad, when actually his paying customers like it that way. Mixes well with raging testosterone and estrogen.
Edit: I also agree with your point that each must choose how much and which flavor gravy he likes best, via tubes, paper cones, transformers, caps, whatever. It's what we do, to make our own kind of music work for us. 100% agree Charles.
When I say distortion this and that, I don't mean to sound snobby. It is distortion, however beautiful it may sound. And nowhere near how much happens when it is crunched to -1dB or mp3ified or PA'd in a concrete stadium, etc. I think we learn to ignore all that, even tubes and paper drivers when we consume music. We can only think one thought at a time, and it is not gonna be how does each not sound with this cap, it is gonna be "I like this groove and lyrics," because the music is more compelling than the sound as long as the sound is tolerable.