Some Androids have extremely long support times, like the Fairphone. But as a general rule, yes, this is true. Unless you buy a Fairphone, or a model that is supported by Linage and root it, you’re losing software updates after just 2 years, which is insane.
If you turn off history, it is very important and definitely shows in your Home feed, actually, it is the no.1 reason to turn off history
Well… no… I have been self hosting it for several years over multiple major versions now. Only for Files, Calendar and Deck though. It was a bit hard to set up, but reading the general Apache and PHP documentation helped a lot.