> TechCrunch also heard from a source with understanding of the situation that the deletion of the app took Facebook by surprise, as well as the fact that Twitter didn’t immediately tell them to restore the content
These statements seem to indicate that Twitter was to blame for removing their app. However, from the axios link:
> ...the Twitter app for the Facebook platform was essentially made useless earlier this month once Facebook officially removed the ability to cross-post.
> With the app's sole function eliminated, Twitter decided to delete it from the Facebook platform, having no reason to think that doing so would remove old tweets that were cross-posted.
> It's not clear whether Facebook knew this would happen, either.
Looks like Facebook did not know that Twitter would delete their app, and Twitter did not know that deleting the app would delete the content. I can understand why Facebook would have such a policy for deleted apps, and I can understand why Twitter doesn't want to have a "dead" app that's active on the Facebook platform. They probably just ought to have spoken to each other.