1
No, you don't need a 'very bespoke AOSP' to turn your phone into a Rabbit R1 — here's proof
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
You won't like anything on offer currently except for that which is entirely self hosted.
What are a couple of the best self hosted options? I wouldn't mind giving it a go on my server. I may not have enough juice with what I currently run, but perhaps as a proof of concept first and then new hardware later.