Hi ISOhappy, welcome to the forum!
I love my D500 as much as you apparently love yours, but why do you see a need to badmouth the D850?
For starters, you seem to embrace a rather narrow definition of wildlife, one I would refer to as birding-and-wild-animals-at-a-distance shooting. For that type of shooting, yes, I'd pick the D500 over a D850 any day. [I actually said so in a different thread earlier today.] However, if you ever go to, say Kruger Park, about half of your shots or so would clearly be better if you had a D850 because there you get to see a lot of wildlife up close. Not sure that's any less wildlife-ish. In my own wildlife shooting (during the past three years alone, I went to remote areas of Colombia, Ecuador, Venezuela, South Africa, India and Nepal), I often find myself wishing for a longer lens but also often shoot closer up, where IQ matters more than crop does.
"Most overhyped camera ever?" Where did you get that? [Ok, you answered 'maybe', but still.] I am not aware of any claims that a D850 will make coffee or slice bread, and when it comes to taking pictures, I know of no other body in the market (D5, Sony a9 and Canon 1D-X Mark II included) that is as well rounded in the overall bundle of AF, speed, dynamic range, noise and low-light performance, IQ, shooting speed, etc., so IMHO the 'hype' I hear seems well placed. Sure, others top it in individual categories, but if I were allowed only one camera, I couldn't think of a better one to own. I respect your opinion on per-pixel noise, but at this point, it is just that - an opinion. Still waiting for a meaningful comparison test, but if it confirms what the specs and initial owner reports promise, Nikon has another winner here.
So, no offense intended: even if all you ever shoot is birding-and-wild-animals-at-a-distance, it is perfectly ok to state that the D850 is not for you, but please acknowledge that it holds lots of appeal for most of us - amateurs and pros alike, and that includes many 'wildlifers'. For my part, I'm happy to see Nikon kicking Sony's butt again, and my unwillingness to shell out that much money for another body is the only thing that stands between me and a D850, at least for now.