No, this is just using GH Actions runners as ephemeral dev machines for your software work, plumbed together with cloudflared and tor for SSH and HTTP connectivity. It would likely been just a % of all Actions across all other jobs even if it was wildly popular. This is a mistaken interpretation, in reality.
You can read what it is more clearly, here: https://github.com/crisdosaygo/ghostbox-home-reveal
Looks like that's definitely been disabled for breaking ToS. I guess that answers that question then.
No lol that’s just because people on the thread flagged it to GitHub. They haven’t looked at it yet. I’m confident they’ll bring it back when they do