These are just patch notes for different Google services that they update throughout the month and not all of them require a system updates.

I’ve been wondering if it would be better to post the whole list here only at the end of the month? Or not to post it at all?

http://lemdro.id/ ?

It shows it in German for me on lemm.ee

I have no idea, I’m not a mod here and I don’t remember seeing that thread.

Modlog says: Rule 2 - use !askandroid for technical support please

!askandroid@lemdro.id

Probably same reason as here: https://lemm.ee/post/35007837

It’s not in the official F-droid repo

https://mobileapp.bitwarden.com/fdroid/

Android roadmap: https://developer.thunderbird.net/planning/android-roadmap

Out of all of them Iceraven has been my favorite simply because of its support for desktop extensions.

You can use more extensions on other ones as well:

https://blog.mozilla.org/addons/2020/09/29/expanded-extension-support-in-firefox-for-android-nightly/

Works on Firefox Beta, Firefox Nightly, Fennec and Mull.