I've had that thought and we've talked about it a bit with respect to upgrades, but honestly, it opens a larger can of worms and trust levels.
There's a lot of sensitive information that I'm already by default trusted with and finding someone that, to be honest, I can trust would be a big conversation.
Also... deploying this ship is not the easiest thing in the world, even as a docker container. Documentation is like the wild west and sometimes, you have to take a best guess or know how docker deploys work or how the instance itself works.
BUT you are correct. if this is going to be a long lasted instance, having other people on board would help. This started out as a fun thing I wanted to do for amateur radio enthusiasts but with the spirit of your post in mind, we'd need more people on board.
We're using linode services(pretty much AWS) on this instance and we backup nightly, but not everything. I'd only want to implement a higher level of backups if we needed it because costs go up.
I'd never really think/imply this is a business. I make no money from this. Just more in the thought of people working together to make this a better place, like a radio club!