Sound is a wave through the air that reaches everyone the same. Once it hits any part of the ear, including almost-microscopic hairs, it gets altered. And since every single person on earth is different, then everyone does not literally hear the same thing. I don't even care if you are identical twins with identical DNA. Those people still don't have the exact same structure of their body on the atomic, molecular, or even cellular scale.
I have an astigmatism in my left eye. That means that a square in the real world will form a trapizoid on my retina (like everyone, it will be upside-down to boot).
Despite this, you and I do not disagree on what is a square and what is a trapizoid. "Square" is not a subjective thing.
Now you may like kettle drums more than trumpets because your HF hearing is going (you may prefer circles to squares), or because the gnomes living in your ear-hair tell you so... and that would be terribly important if we were discussing RnB vs Jazz; but it has little to do with speaker design, since the purpose of a speaker is to convert an electrical signal to an acoustic one.
If I applied your standard: then TVs with distorted signals could not be said to be "worse" than ones with accurate signals; and a monitor that drew a square as a circle would be equally valid with one that drew a square.
Still. Feel free to cover your TV screen in vasiline and move the hue-adjustment all the way to red if you want a "warmer image"... just don't tell me it's cause "everyone's eyes are different".