This!
If your GPU isn't pegged to 100% usage with Vsync disabled and no FPS cap, it means it could do much more for you, but your graphics settings, or your weak CPU won't allow it. Reviewers like using unrealistic settings to test for pure CPU performance, but let's be honest, no one ever plays at 720p minimum. It's just another form of media sensationalism, nothing more. Completely pointless.
This is sort of half true. The first thing with games is "what are you playing?" and that's also the biggest one.
I've got a 2080 super in one box and a 3090 in the other. Outside of very few single player games neither are going to hit 100%. If someone is playing overwatch, or quake, or the myriad of other games we play on 1080p 240hz monitors they are never going to stretch their legs and CPU performance at lower resolutions does matter. Now playing single player games like Doom Eternal or Elden Ring on 4k monitors or ultrawides (multiple monitors FTW!) that situation changes. But this is a usage scenario issue.
The point of measuring absolute CPU performance is just that. There's nothing normal about a 100% pegged GPU unless it's struggling or you are doing some sort of non gaming task load on it. That sort of thinking is what leads to nonsense like hitting 1000 fps in the starcraft loading menu and saying "aha, I have found it!".
For me with a 240hz monitor, 1080p, 240fps, frame locked I am never going to hit 100% gpu usage in the games I need those frame rates for. That reverses when playing SP games at 4k or higher.
I only peg my system when I'm doing workloads over VMs.