But you can get an Android device with a reader that's actually functional. Navigating a file system doesn't even vaguely resemble functional.
I'm not advocating stock Kobo. I'm saying the absolute bare minimum for me to consider a reader usable at all is the ability to navigate/search/filter my library by all of author, publisher, tags, series, and any other metadata. Folders are an extremely poor substitute for actual organization tools.
From 14 to 31 is still pretty rare. (I checked, population is ~6mil).
And at such a low rate relative to the population, if you're assuming most cases don't report it, the difference in reporting could pretty easily be increased awareness that reporting it was an option or some other similar cause unrelated to an actual increased failure rate.