This puts it more eloquently than I ever could. It's why I think projects like Signet and Seedsigner are so important.
The push for small computers and simpler systems is real. Gemini is one such example.
Discussion
And if you enjoyed this, you'd likely also enjoy "A plea for lean software" by Wirth
https://cr.yp.to/bib/1995/wirth.pdf
Written in the 90s, and even more relevant today than the time in which it was written!
Can you back up a Signet with an encrypted file stored in the cloud or elsewhere?
Yes. Backups go to a file and it is simply a copy of what is on the Signet device. This means it is encrypted, so it can't be unlocked without your device's password.
Keep the file safe though, because the password is the only thing needed to unlock the database and get all your secrets. There's no hardware protecting the passwords when they're in a file.
I keep my Signet backups offline for this reason. A thumb drive or USB hard drive works great for this. But if you wanted to store the backups on a cloud service (your own or someone else's), you certainly can.