Ah! I did not know that; I only used DeX a few times. But yes, something like that indeed. Shame they always discontinue things like that. I understand it, but still a shame. We need more diversity and Android simply isn't productive enough for me even though it's getting very close. I prefer Linux anyway for the customizing, so the combination would be excellent.

I used it primarily as a great ssh terminal, better than any Android app I used so far (but ConnectBot is good). I worked on a Rails and on a Node app on there, fixed a server for a customer when in a hotel on the other side of the world.

I'd rather reverse the setup. Linux first with phone calls and SMSes, an Android emulator or whatever for the apps that nobody will ever develop for Linux (banking OTPs, etc.) But I don't feel optimistic. I think that the only reasonable chance is that today's hardware (which is good enough even for mid level phones) will get so cheap and firmware so available (FOSS or supported) that somebody will use it to make a decently sized and light phone with Linux.