> Writing down a 30-digit code once every 2-3 years isn't that hard.
If you know that Signal needs a special backup procedure. If you don't, you've lost your data.
Also, that process applies to manual backups and recoveries, such as for device-to-device transfer from a working device. It doesn't work nearly as well for performing regular backups of a working device in case it abruptly becomes a non-working device.