Nonsense. Someone has to be operating at the sharp end of the enable prompt, and sooner or later it'll be 0330 and that person will type Ethernet0 when they meant Ethernet1, whatever management you have in place.

When that happens, you do just what Joyent did here: you send out an embarrassed email to customers, everyone else in the ops team gets a few cheap laughs at the miscreant's expense, you have a meeting about it, discuss lessons learned, and you move on.

Everyone screws up. Everything goes down once in a while. This is why you build in redundancy at every level.