hass.io moved to supervisor(and OS). Supervisor has moved to more locked down.
Definition of an “Officially supported installation method”
Today we are introducing a classification between what is “Officially supported” vs “Community supported”. An officially supported installation method in the Home Assistant context means:
“A way of installing and running Home Assistant that is officially supported by the Home Assistant project. It means the installation method is tested and documented in the official documentation. Running Home Assistant using such a supported method, leads to the optimal user experience, now and for the future.”
The Home Assistant team will not prevent you from running Home Assistant using an unofficial method. However, we cannot help with issues that you encounter. We are open for contributions that improve compatibility with a community supported method as long as they do not impact officially supported methods, add a significant amount of code exceptions or future maintenance burden on the Home Assistant development team.