Can you propose a better term for the concept then? Perceiving something as lossless is a real world metric that has a proper use case. "Perceptually lossless" does not try to imply that it is not lossy.
The term for this is "transparency." A codec is "transparent" if people can't tell the difference between the original and the compressed version.
The term for this is "transparency." A codec is "transparent" if people can't tell the difference between the original and the compressed version.