@tony1954 There are many sources and types of distortion. Some forms of distortion are irritating to some people. For example, I can't stand the 'sizzle' that comes from some digital and most electrolytic caps in the signal path. Some other people don't seem to care. THD is only one form of distortion.
Other forms of distortion don't have much impact. For example, I don't mind a bit of 'wow' in my music, but it drives other people nuts.
YMMV. And that's the point.