I suggest you start with their statement.
https://f-droid.org/en/2019/07/16/statement.html
It's a classic case of the "woke mind virus" excuse to censor. The very same people who were advocating for software freedoms now "take a political stance" and ban social network clients from their platform because the network in question refuses to police its users.
https://reclaimthenet.org/f-droid-bans-gab-app
https://forum.f-droid.org/t/discouraged-by-f-droid-censorship/12017?page=2
They even starting censoring any discussions of the topic on their forum, and banning users because of it.
https://forum.f-droid.org/t/recent-events-on-the-forum/6724
There has also been a lot of drama recently surrounding their "board of directors", with members quitting or whatever.
https://web.archive.org/web/20231117190207/https://gitlab.com/fdroid/admin/-/issues/446
Why does an Android FOSS repository even have a board of directors and community councils in the first place? How has it even come to this?
As I mentioned in the main post, F-Droid is compromised. There are too many humans in charge of things, and when they censored apps for ideological reasons, they opened a pandora's box. They cannot be trusted. Don't trust me either, do your own research.