It seems fine that this isn't available in docker, since you can do all of this via docker and your host's configuration system. It would be nice to have a GUI for it, but if you need a GUI then you probably aren't running HA via docker, you used their image.
An anecdotal data point, but I've been running the home-assistant container image on k8s without any issue, and I have a lot of integrations.
I'd go as far as to argue the (officially supported!) container release is the best way to get a production quality install of HA - containers are a great way to package and release complex web apps like HA. Mines automatically updates itself every time new container image released, has done so with no intervention from me for over a year. With the container lifecycle/config, you don't really need Supervisor mode either.
To say it is crippled is nonsense, it is literally one of the two officially recommended install paths:
> https://www.home-assistant.io/installation/
Official support for Docker release in HACS:
> https://hacs.xyz/docs/setup/download#home-assistant-containe...
If you use the docker version it is crippled with no "supervisor" mode.
Also every now and then a light or switch will go greyed out in HA, their official apps still work, and I have to restart HA to be able to use it in HA again. Pretty annoying when you get home after a long day, soaked in rain, fumbling in the dark to turn on lights and now you have to fumble more to restart the damn server before you can use your lights.