Here's what I am convinced of: They don't sound like 1980s digital amps.This is a fact, though, the word “digital” is a misnomer when used to describe class D. More appropriate to refer to them as PWM is it not?
The topology has improved vastly, even in just the last 10 years, and the good ones are at least listenable. I can certainly tolerate their use in cars and Bluetooth speakers at least.