My guess is, most people is using 61mp Sony camera to snap photo and post on Instagram... Just guessing20mp is tons, exactly how big are you planning on printing your image that it wont be ok?
I've a 190x96cm or so photo printed off the inspire 2 x5s camera, and that's a 20mp sensor as well but micro 4/3's.
Looks absolutely perfect in print, and now imagine how much sharper it would be with a FF sensor like will be in the R6
Honestly, more MP aren't needed unless you're doing billboards or printing 6ft photos for galleries, by which time you'll probably be talking about shooting on medium format anyway.
R6 looks great, my only gripe, and to be fair, its a very small gripe, is the mode dial on top of the camera, that could surely be done like on the R and the space used for some other dial?
If theres one thing the R did right IMO, it was the mode selection buttons to save space on the top.
Tho they made a serious blunder with the touch bar and the lack of a scroll wheel on the back.