How to remove annoying iCloud nagging in Catalina?
There are solutions posted here that I'm still a bit unsure about: 
https://forums.macrumors.com/threads/i-dont-want-to-use-icloud-but-system-preferences-nags-me-to-start-using-it.2187969/

defaults delete com.apple.systempreferences AttentionPrefBundleIDs will remove the "1" notif, but there's still annoying imperatives left:



The red "1" was my biggest problem though, I'm not going to spend more effort right now - there are suggestions that involve booting into recovery and stuff like that which I just can't do right now. All ears for anything better!