Devs should have the freedom to make the kind of game they want to make at the end of the day; the level of detail and character rendering in Hellblade II wouldn't be possible at 4K/60fps for instance, so being restricted to that would prevent Ninja Theory from realizing their vision.
No matter how powerful your hardware is, you can always create more detailed visuals at 30fps than 60fps, or at a lower resolution, and if the developer wants to prioritize detail for the sake of immersion, that should be their choice to make.