There are several things going on even now, 1 hour after your comment. But I appreciate that they list them. That hopefully means that they have a good culture of honesty, and they can improve.
I am sure it's luck but we have few hetzner VPSes in both German locations and in last 5 years afaik they've never been down. On our http monitor service they have 100s of days uptime only because we restarted them ourselves.