I kinda disagree. High risk environments just means that they will have to have a human-in-the-loop for a longer time which drastically reduce the skill required for such human (which is still requires high skill just not stupidly high).
A swarm of millions of devices (that can be solar powered) could be more resilient than the "few" nodes that the "internet" architecture has. I guess that is the motivation, in theory.
Internet is not neutral, and hasn't been for too long, many providers offering free Whatsapp or cases like LaLiga.
Only works if the Docker socket is mounted which is pretty stupid thing to do and also not something you would do in a "frontend" container. Essentially is like having a password-less ssh