alt Hacker NewsI also had a similar thought after these announcements. The main issue is seamless synching that syncthing provides between Linux and Android. There are alternatives like Mobius Sync etc but what I've heard is that they do app-specific sync, not like e.g., sync all my files in this folder X in Linux to a folder Y on iPhone. I'm not an iPhone user but this has always been the main hurdle for me to switch over despite the increasingly locking down of Android.
For files I use the open source Material Files, which supports SFTP servers. So I just have a little file server. For calendar, because Google doesn't reliably support background services, it's best to use a calendar app with builtin caldav sync. For carddav, I use a background sync app though (davx). Super lame that this is not built into android, not even into lineage. You'd think someone would implement native caldav/carddav sync? Maybe this is my calling haha.