You're forgetting about touch terminals, which have a lot of legitimate uses in service-based businesses. Not all stationary use of computers is using them as workstations.
The stupid thing about the Fox News machines is they're basically running large-screen tablet apps and not apps that take advantage of large screens, for the most part. But there's nothing wrong with, say, a drafting table style device, that would be used by people like artists and architects.
As an aside, I don't like working by ergonomics guidelines. I sit on a short bench with no back to it, and am often working cross-legged. And my back isn't 90°. I guess I'm going to ergonomics hell.