Some Fediverse apps have ban lists within them for certain instances. This has been hugely controversial in Fediverse community, to the point where some apps that fork apps with ban lists and republish them without those ban lists, sometimes get removed from F-Droid! You can't just keep banning Fediverse instances. It's like banning websites. So what is this going to mean? Approved instances. Here's a list of 200 ins…
Do you have links? The only example I could think of was Freetusky, which was unmaintained while upstream Tusky itself got regular updates. That's what I'd guess as reason for its quite recent archival: https://gitlab.com/fdroid/fdroiddata/-/commit/f9b7a9540f368f...
Latest version is 8.0.7 while upstream Tusky's latest version is 12.1.
Back when it was new, the F-Droid devs actually defended Freetusky and didn't follow demands for its removal. https://gitlab.com/fdroid/fdroiddata/-/issues/1736
I don't think that F-Droid should pander to people who don't care about FOSS or maintaining software, no matter their views.
Disclaimer: F-Droid maintainer/contributor (but gotten inactive for unrelated reasons).
Edit to add: note that another Tusky fork had been uploaded to F-Droid (Husky) before Freetusky got removed.