I get that wallpapers can be stunning examples of photography / art. Having used 2 or 3 screens for work I don't see the point - if I can see the wallpaper then I cannot see the work I am doing.

I'm using a macbook air right now and I have no idea at all what the wallpaper is. None. I never see it. Yes I can click to Desktop to see it, but why? I think my Windows wallpaper is a cliff/sea? Maybe not, never see it.

Maybe they are for 4k TV screensavers?

That said, as images they really can be amazing.