I don't know how often Hetzner has similar outages, but outages at the rack and server level, including network outages and device failure happen for individual customers. If you've never experienced this, it is probably just survivor's bias.

Aws/cloud has similar outages too, but more redundancy and automatic failover/migrations that are transparent to customers happen. You don't have to worry about DDOS and many other admin burdens either.

YMMV, I'm just saying sometimes Aws makes sense, other times Hetzner does.