We have deprecated [...] Home Assistant’s Supervised installation method, which involves running your own operating system, then installing the Supervisor and other requirements on top of that.
Tell us you can't architect software like a first-year without using those words. Proper packaging has been out for 30 years.
My foray into self-hosted home automation was set to begin, but if they can't release software like adults then fuc--uh, good luck to them.