I agree that formatting and whitespace tweaks add to the overall noise of the diff, but I also think there can be appropriate times and a places to get the code tidy. If the PR Author knows a file is unchanged they could add a "heads up" comment for the reviewer. Alternatively, they could open a separate PR that is purely formatting/code cleanup.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.