you’re pretty much right! there is a difference, but one fold won’t be largely discernible on something like a piece of paper.

the initial comment was about foldable screens though, which are both expected to fold more then just the once, and are also much more prone to failure as a result of inter-layer stress.

the issue isn’t that you see the screen deforming, rather the tiny deformations you can’t see are causing issues like delamination or seemingly random failure. but hey, extra stretchy screens could, if not entirely fix, at least mitigate this particular problem!