Good review! Answered all my questions, and I appreciate the time taken for the screenshots.
The x570 Aorus Master included a backpanel Clear CMOS button, which I found invaluable and have used many, many times since July 2019 with my 3900X. Amazingly, the x670e Aorus Master did not include one, but they wanted $500, anyway, which I did not give them. The 870e seems much more robust and better designed than the x670e, and your article has me steering toward this board.
I'm partial to the Aorus Master because my current x570 Master has been outstanding and mostly trouble free for the last 5+ years of continuous, daily operation, 8-12 hours a day. I think I'll say that the x870e appears to be everything the x670e apparently wasn't. Leaving off the Clear CMOS button on the backplane was a major mistake with the x670e version of the $500 Master!
Often it's the little things that tell you a lot about a product, but I don't call having to open the case and set a CMOS jumper every time I update the bios to be a "little thing"...
x870e seems like the best bet for the years ahead. In 2019 I jumped for joy when I saw the backpanel Clear CMOS button! I grew tired of having to open the case, remove my GPU just to set the CMOS jumper. It's a feature that should be standard on all motherboards moving forward, but the lower-priced mboards don't seem to have them! One step forward, two steps back...if you know what mean.