Earlier quoted context omitted.
I think the idea is that the display kinda represents the shot, but not well, but if you cared you wouldn’t be shooting with a $29 camera. I mean, it takes 1920x1080 pics, don’t get too picky there, Ansley Adams. :-) But I agree with you, I don’t see how the “viewfinder” is all that useful, other than “nifty!”.
But if it’s giving you no information about what will actually be in frame you might as well just look in front of you and guess
Often switching from using your eye to looking through the viewfinder and fiddle with composition is how you ruin a genuine shot and miss the moment.
Also I used a camera without a viewfinder for some years, I guarantee if it's a fixed lens you learn what you get quickly.