I agree that GP is kind of misusing the word "useful", but I do think you're missing the point. People like using aesthetically-pleasing software; improving aesthetics adds "value" if perhaps not "usefulness".
Except the new Ventura-style share sheet is ugly as hell, and it's oddly detached from the contextual menu. I critiqued the UI of the new share sheet in a previous blog post, linked at the beginning of this one.
It seems to be yet another example of Apple bringing iOS UI to macOS.
It seems to be yet another example of Apple bringing iOS UI to macOS.