I am always interested in the theory that distortion in the analog domain from various sources may make stuff sound more interesting to people.
My background in this topic is a life long love of synthesizers. If you go back to the 1970s or early 1980s, there were some excellent analog poly (multi-oscillator) synths.
If you went to one of those hooked to a decent speaker, and hit a chord on a what people call a "fat" patch, you got this amazing sound. They would take two oscillators and combine them, with maybe a slight detuning.
Now you can go to your latest digital synthesizer. And dial up the same sound. Combine two (digital) oscillators and use a digital filter and whatever else is needed. And in theory, you get the same sound...in theory.
But for some reason, and I can't explain it, it never captures what I remember from years ago. I am not the only one who feels this way. Which is why some analog synths from the 70s are worth much money.
We could be crazy. Or perhaps, the lack of precision in analog circuits added something wonderful to the tone.
I won't debate this. Just telling you want I have experienced