Our fullscreen photo gallery and animated image support are powered by a fork of NYTPhotoViewer and its nested dependency FLAnimatedImage. FLAnimatedImage is no longer actively maintained, so as of NYTPhotoViewer 4.0.0 their team has replaced it with Pinterest's PINRemoteImage to resolve build issues they were encountering.
If PINRemoteImage supports our needs, we should update our version of NYTPhotoViewer and replace our use/internal extensions of FLAnimatedImage with PINRemoteImage to protect us against running into issues like the NYT team faced. Additionally, as @JoeWalsh suggested, may also be worth investigating if NYTPhotoViewer has addressed the issues we forked it for and if not try and PR our changes upstream.
This is not a critical task, but feels like it would fit naturally into the period of time when iOS 14 is available in beta/we evaluate minimum iOS requirements (currently the app's minimum deployment target is iOS 11.0).