Plain vanilla OS please, telecos, and a carefully curated store of all that stuff you're sure we will find irresistible. You probably won't even need a working server for that.
Can't see that happening anytime soon. Probably not ever. Too many tie-ins/lock-ins/"monetization" for telcos to stop bundling unremovble crapware.
The easy solution is to stop buying the device from the telco. Just get SIM only deal and buy the device yourself.
Biting the hand that feeds IT
