[userbinator]

As far as I know, "CPU usage" of a process has always been "percentage of time spent in it" so I think anything else is overthinking/overcomplicating things. It makes perfect sense for CPU usage to go up if the frequency starts falling due to throttling. That's why a separate indication of current CPU frequency is necessary.

[dataflow]

I find this intuitive for thermal throttling, but not for power throttling, though I'm not sure changing the definition makes sense now (it might not even be practical). I've frequently fired up some process manager and seen it at > 50% CPU despite the system not running anything interesting, and it always takes me a second to realize that it's throttled down to like 400 MHz and the process manager itself is consuming what's left of the CPU.