A lot of people suck up to them, they seem to require formal ID proof to authorize your account outside EU and they can deny you without any reason whatsoever. If you look up online about similar things happening to others, the standard response you would see is "If you don't like them, take your business elsewhere". I would rather pay more with digital ocean than to be treated like untouchable with hetzner.
And not just ID, but additional documents proving your address (like a utility bill, but only in some specific formats). I tried to open an account there a couple of times, but they discriminated against me based on the documents I had).