Thanks to you and Epic Light for your time and trouble in doing the tests (and having to brave those super luxurious digs in Scottsdale at Holiday Rental. Sarcasm).
First, you assumed that Epic Light's "tests" that going from 18:1 to Q0 compression had zero impact on image quality, so you went with 12:1. Probably not the best methodology to start a rigorous "A/B" test to take someone else's word with no data to back it up.
Second, stating the obvious, all of us are viewing your results through YouTube's compression and gamma tweaking, combined with (my guess) that none of us are viewing on calibrated monitors in a gray room environment.
Third, fair that you point out moiré & aliasing with the 12K. This is something that you could/should drill down on ... in a positive way, such as what one could do to ameliorate moiré & aliasing in the 12K or ANY camera. Would you have seen moiré at Q0, for example ? Or 18:1 ?
Most important: Stay healthy .. didn't see many masks or much social distancing in your BTS clips. Many different eye balls up against those EVFs.