Wouldn't it look stuttery if the user tried to drag windows or other widgets with a limited framerate?
> What you actually want is low latency
High frame rates directly contribute to lowering latency.
I guess I'm the polar opposite of you here, I heavily prefer low latency/high refresh rates over low CPU/GPU usage, as long as the machine is plugged in to a power source.
Maybe it's car analogy time: this is a bit like saying, well it's fine if my car is redlining 24/7, as long as it gets the speed I want when I happen to be on the highway.
Nobody is saying they want to tolerate some horribly laggy interface for the sake of lower CPU usage. The point is simply about not wasting enormous amounts of power when it's not needed.