It must have been comically weak, like "root", "password" or something like that
Relying on a 'sane password' is like seeing the stat '1 out of 10 cars is left unlocked' and commenting 'Yeah, but those people are stupid, I'd never forget to lock mine!'. While maybe true, it's irrelevant. It's objectively safer to keep the car in a private garage (Tailscale) than to leave it on a public street. Feel free to leave your car wherever.