https://peertube.co.uk/videos/watch/55eece8c-2d6c-4da3-8c8c-...
This prototype version is definitely not ready for mass market due to (1) known overheating issue (so far I've observed it get quite warm sometimes, but not uncomfortably hot), (2) a bunch little software things to work on. But it's really exciting to be able to `ls` and `cd` and `ssh` on a phone, and know that the software updates are coming.
Purism's accomplishment already is pretty incredible on both a hardware and software level. For me, well worth the price. Congrats to them even if there is a ways to go yet.
Can't you do that on any other Android phone with terminal software installed?
Google is like a feudal lord. In exchange for owning you, they'll protect you from everyone weaker than they are. Google doesn't want to break into your office computer as long as they can shovel ads down your throat. And their reputation for security is much higher than a small startup regardless of the startup's competence and intentions. See e.g. Project Zero or Chrome vulnerabilities vs Firefox.
Not all security mind you, Android runs on ancient kernel and it won't be changing for a long time even though Google announced plans for moving to mainline linux.