God I miss the old days of android...the OG droid, everything was unlockable, no fuckery. Google hadn't yet slowly started adding data collection by ways of slowing moving functionality away from the core AOSP.
It still is open source, btw. But they're just intentionally choking it to death. They've recently announced they're not going to maintain the open source PHONE APP...FOR THEIR PHONES....for christ sake. They've even had a new replacement OS in the works for a couple years.