charles,
Yes, I think that people who hear something like the Devore O series as colored or too rich, departing from "neutral" are generally comparing them to the sound of more "neutral" speakers, not necessarily to real sounds. So they know what their music, say a voice or a sax track, sounds like through a more neutral speaker, and if a speaker departs it is colored.
Whereas clearly I’m talking about what things sound like in real life to me.
I have owned, and still own, plenty of quite accurate speakers - until recently I had Waveform monitors (very accurate) and I own Thiel and Joseph Audio, both of which are more in the accuracy camp. I love their sound! And there are some things each does that captures aspects of real life sounds. The Joseph speakers; a super grain-free unmechanical sound, but generally thinner than life. The Thiels, very even top to bottom, richer than the Josephs, a density and palpability that is life like more than most speakers. But beat by the Josephs for lack of grain and timbrel beauty. The Spendors I have (little S3/5s) recreate the organic roundness, softness and body - the "gestalt" - of human voices better than maybe anything I’ve owned (Harbeth being the competitor). But are softer than life for other things. The Devores aren’t as grain-free as the Josephs, nor as focused, punchy and palpable as the Thiels, but they reproduce the sense of size and richness that gets closer to the real thing in many instances, to my ear.
If someone is in to pure accuracy and specs, that can make life a bit easier in a way - the goal isn’t "sounding real" per se but simply accurately reproducing an input signal, where you can look at the linearity of measurements for confidence, and then the chips just fall where they may in terms of how each track will sound. Quite a number of people get along happily that way.
But if you go the route of seeking some comparison to live sounds, while it can be very rewarding, it’s also of course always going to be about compromise. No speaker I’ve heard gets every aspect right, and depending on where one is in terms of experience, what one speaker gets right will turn your crank. Some people may have started with the boxless transparency and realism of quads and later realized they were missing the density and dynamics of real life sounds and then went on a trajectory that led them to horn speakers. Others may have started with horn speakers, and then maybe felt they could hear mechanical colorations that they later found absent in panel speakers, and went in the opposite direction. So two people may hear a speaker and seize on it’s different qualities. I may hear a horn speaker and immediately think it sounds more live; someone dedicated to electrostatics may immediately hear it as more boxy and artificial.