So it's the functionality/"security" dichotomy again, but in a slightly different place from iOS. Google won't let an app access all your files, but what if you the user specifically want this app to access all your files because it is, say, a file manager or sync tool?
The escape hatch is to use the FDroid version rather than the Play Store version.
The escape hatch is to use the FDroid version rather than the Play Store version.