Here's an idea for a "distractions free" phone: Any android phone. In a work peofile use a primary launcher app that only shows 3 or 4 important apps. Disable everything else. Lock all the rest in the normal profile with a password that is a randomized 32 or longer character string that you can't possibly memorize. Write it down in glaze on a plate, which you smash and store in a bag with some super glue.

Are there substantial numbers of Russians who seriously wouldn't be wise to this?

I still get calls, but I can't see details (e.g. just the phone number, not the caller).

Network Effects.

This is not a typical home or office printer, very specialized.

Same on all counts.

Sure thing! So glad I could be helpful! I don't blame you. It's the only thing I'm keeping a Win10 dual-boot for right now, and to their credit, it does work quite well in Windows. We've had a ton of fun with our set. In the meantime, I'm keeping up with the project but not actively tinkering with it myself, because it's exciting but also not quite there yet. It's at least given me hope that it can be done though! I'm confident we'll see significant gains sooner rather than later. Hats off to them. (Once my income stabilizes I'll gotta pitch them some funds...) Envision has made it VERY convenient to get set up, but the whole process still saps more time than "Fire it up and play." So maybe play with it at some point, but either way definitely keep your ear to the ground. I'm hoping in the future we'll get to use it for things like Godot XR or Blender integration.