Agreed re: there being randomness with each hit in a live performance. I wonder, though, if the distribution of one hit is in fact independent of the previous -- perhaps the inner feedback loop of "am I falling behind / speeding up" in a musician causes the next distribution to be skewed differently or centered at a different instant.

In which case I can understand the thought process of it being uninteresting, in a way. And you're absolutely right that when the randomness is applied into a short loop and repeated it falls into a strange uncanny valley (at least to my ears).

Perhaps another aspect of this is that the randomness, added based on e.g. a seed to the whole track, would be hard to control as an artist. I know when I apply randomness to MIDI I tend to go back with a fine-toothed comb and re-distribute hits that don't go where my mind wants them to.