https://en.m.wikipedia.org/wiki/Betteridge's_law_of_headlines

No.

Always remember: RAID is not a backup.

Having only one backup and the server dying means you now have no backup, therefore the 3-2-1 scheme for backups is worth looking into.

That depends a lot on what you’re hosting resp. if the mobile apps are using Google’s/Apple’s messaging/notification services.

Not sure if it makes things easier than your current setup, but take a look at Mediathekwebview.de

Is he going to offer miniature submarines and call people pedos again?

The official NC docker container uses the “www-data” internally to run the services. This will get important if you ever want to run tasks via “docker compose exec”.

Have a look at kimai.org

The have a self-hosted option and apps (didn’t test those though).

Which means it’s likely a US-focussed scenario.