Almost every task the Z6/Z7 can accomplish, one out of the D850, D5, A7III, A7r3 or A9 seem to do better.
Very true statement for a change, but I don't walk around with these 5 bodies. And I believe that you have here the answer to your own question.
One factor you may want to consider really is that once you have demonstrated your inability to acknowledge your past mistakes, there is very little incentive in continuing to discuss with you.
But ok... one last time, the advantages of the Z7 over the D850:
- all the advantages of mirrorless cameras that you have been hammering on us when promoting the a7rIII over the D850 in Nikon threads:
- smaller, lighter
- IBIS
- wider focus area
- more accurate AF using lenses wide open
- the advantages of EVFs (preview of actual shooting conditions, better at low light levels,...)
- much better video and live view AF
some specific Z7 advantages resulting from Nikon's implementation:
- access to unique lenses not possible until now and to lenses of overall higher image quality
- better video specs
- direct access to user settings
- multi-role top LCD
- better touch screen usage
- better and more usable silent shooting
- slightly faster shooting sequences
The non inconvenients compared to what I would experience with a Sony a7rIII
- remain weather sealed
- maintains great compatibilty with F lenses
- has similar ergonomics
- still best in class auto-ISO capability
- still true 14bits lossless raw
And now, the disatvantages compared to my D850:
- lack of double memory slot
- one less direct UI dial
- worse battery life (probably not as bad as the standard figures tell, but still)
- possibly a slight reduction of AF speed for F mount lenses
- worse buffer
- the fun factor of shooting with an OVF
Now, it would have been incredibly refreshing to have you listing these instead or me, but I guess that was expecting too much.
As far as I am concerned, I will probably try the Z7, shoot with it for a few months in parallel to the D850 and decide if I keep it or not (and if I sell the D850 or not). This is really the only way to get to know a camera and I don't like to talk about things I don't know well... Shooting meaning take actual photographs btw. I don't know whether it is something you still do, I haven't seen you post any images for a long time.
Cheers,
Bernard