I am sorry what? I have been with Hetzner over 10 years hosting multiple servers without issue. There has to my knowledge never been a shutdown without notice on bare metal servers and it does not happen often. Like once every 2 years.
Hetzner suspended the account of a non-profit org I voluntarily supported, without explaining the reason or giving us possibility to take our data out. The issue was resolved only after bringing it to the public space. Even there they tried to pretend we are not actually their customers first
I've been using Hetzner for years and what happens every 3-4 years is that a disk dies. So I inform them, they usually replace it within an hour and I rebuild the array, that's all.
Recently I've been moving most projects to Hetzner Cloud, it's a pleasure to work with and pleasantly inexpensive. It's a pity they didn't start it 10 years earlier.