Ralph, this is very simple, and you have danced around it repeatedly:
If the "digital" artifacts you refer to are loud enough to be audible, then how come they don't show up in a standard FFT measurement? Or in a standard THD test that nulls the test frequency and leaves everything else. You already agreed that stuff 40-80 dB down is too soft to hear when it starts and stops in my Artifact Audibility test, so by extension it's too soft to influence "tonality" either. Aliasing, and all the other bugaboos you talk about, are 100+ dB down. And so they are inaudible. This is very simple audio basics, and clearly the burden of proof is on you to prove otherwise. Since you still haven't described a test you're willing to take that will let you prove your beliefs, it's clear that you're unable to do so.
Here's direct question I hope you'll answer: Since you are unable to prove your beliefs, I can only assume you haven't proven them to yourself either. So doesn't it make sense for you to do some experiments, so you will know that your beliefs are valid? I'll be glad to hear how you would test yourself!