[jamessb]

A photo/video editor may include the ability to upload images to a sharing service/social media.

PDF viewers (like GoodReader) can download a PDF from a URL, or read it from a network drive.

Obsidian has functions that need internet access (e.g., connecting to the Obsidian sync servers, installing community plugins).

Password managers often have a sync feature.

A video player may be able to play files hosted on remote servers or network drives.

They should be useable without an internet connection, but it's entirely reasonable for them to request permissions for network access.