I think you’re being intentionally obtuse here and betraying the spirit of the question?
Your meta analyzing the question instead of just taking the questions as it is, and in the process failed to actually address the core question. It’s a hypothetical scenario where most of our radio communication is jammed and unusable.
The mechanics of how the question got there don’t really matter, that’s not part of the question, it’s pointlessly pedantic to pick it apart. Just imagine the scenario with the mechanics you can consider plausible for such a scenario, and roll with it 🤦
“Aliens have technology beyond our means and largely render radio communication impossible by way of jamming”
This is the way.
I do this. PFsense DNS resolver, and have loopback enabled.
DNS for all the domains points at a reverse proxy (Caddy) that handles valid HTTPS termination. So all my services have valid HTTPS certs, and devices on my network can access them normally.