This article I will only discuss Digital (still) Cameras targeted to the prosumer market segment. Although, I must note that many later professional models are showing the same short-sighted design flaws. The flaw is the lack of a workable view finder. I will discuss as follows.
I happened to buy a Canon G7X for reason’s I will not describe here. The G7X is a nice prosumer/enthusiast Compact Digital, without a view-finder. It has a nice, on paper, LED screen to view and review images. I found that to be the major issue with the camera. If you are shooting in daylight, especially with the sun behind your back, you can’t see the screen. Even if you are not shooting in bright light, there is a lag between what the lens sees, and what the screen displays. I tried to follow a squirrel, and a few planes coming at, and across me for a landing. No good; the display was not fast enough to allow me to frame the shot.
As should mention, I bought my wife an SX-620, with no view-finder, but a big zoom; What does she use? Her iPhone.
So it seems to me that camera vendors should take a queue from my experience. Keep the display, but bring back the view-finder.