This reminds me of "Emacs as PID 1" from a decade ago, to which I sadly cannot find a link anymore
https://web.archive.org/web/20041030060909/http://www.inform...
Also, the psychotherapist was one of a kind ;)
Personally, I could live with tmux or zellij as PID 1. Because from there I can do everything, except GUI. Might as well use Sway then to achieve virtually the same.