OVH had a datacenter burn down a few years ago, so think about that what you will :)
Imo it makes sense to spread out, and have backups with a different provider than the one your main servers run on. They should all over S3, which is a standardized format for easy syncing of backups
maybe read again: the other posts mention accounts being denied before anything is created, or customers being informed up front and given lead time to move.
OP claims everything got immediately wiped without warning.
That would be against Hetzner's own TOS.
OP also doesn't elaborate further, and is posting this in a position where he has to explain his own downtime of multiple days.
Make your own judgmenent what is realistic here
OVH had a datacenter burn down a few years ago, so think about that what you will :)
Imo it makes sense to spread out, and have backups with a different provider than the one your main servers run on. They should all over S3, which is a standardized format for easy syncing of backups