Having done a lot of stitching for years, I am fully aware that viewfinders are not always needed to compose.
But my exprerience is that there are many cases, in particular when dealing with people, where viewing at the moment of capture is an essential dimension for me, a dimension that I find much more important than exposure simulation. I have frankly never found exposure to be a particularly problematic aspect of photography these past years. I can pretty much anticipate how my D810 will expose and compensate in a split second so as to get within 1/2 stop most of the time.
Anyway, maybe it's just me, I am not trying to convince anyone and I am again not trying to deny the value of EVFs.
Cheers,
Bernard