No doubt FB is preparing to A/B test dozens of variants for maximum "conversion" :)

The dialog I am constantly seeing is this one, which seems to come from the OS: https://i.imgur.com/7JGotq3.png

Now that iOS allows you to share only some photos with apps (which is great) I see this before practically every photo selection dialog in third-party apps. My choice here doesn't affect my ability to share a single image with the app in that moment; they just want to suck my whole library of photos in for background processing. I'd very much like to not see this dialog more than once a month.