I think you misunderstood my point.

I'm saying it doesn't matter if certain byte sequences are invalid and don't correlate to real colors.

Imagine you're encoding two digit numbers into bytes. It's not bijective but that's fine, no correct two-digit math will give you an invalid byte.

Or imagine you're encoding numbers into bytes the way UTF-8 works. It's not bijective to all sequences of bytes but that's fine. No correct manipulation will give you a sequence that can't decode.

If you're trying to do incorrect math, you've already lost, and no color space will help. For example, overflowing your red channel in sRGB could turn your eggshell into a cyan.

> and trying to stay percepetually uniform

Where did that come from?

Zero encodings will be perceptually uniform, therefore being non-uniform isn't a disqualifier.