This kind of provision requires enforcement and verification. Thus, a tech spec for the backup procedure. Knowing Germany good enough, I'd say that these tech spec would be detrimental for the actual safety of the backup.
When you live in Germany and are asked to send a FAX (and not a mail, please). Or a digital birth certificate is not accepted until you come with lawyers, or banks not willing to operate with Apple pay, just to name few..
This kind of provision requires enforcement and verification. Thus, a tech spec for the backup procedure. Knowing Germany good enough, I'd say that these tech spec would be detrimental for the actual safety of the backup.