It is reasonable for the attacker to assume that you would not do something you think is bad.
It is reasonable and it is wrong. The point of Petrov Day is that Petrov didn’t do what was reasonable, he actually managed to take the right action. Perhaps it’s not much criticism to say someone doesn’t live up to Petrov’s standards, but nonetheless, if you blindly trusted the admin team, you didn’t live up to Petrov’s standards.
It is reasonable and it is wrong. The point of Petrov Day is that Petrov didn’t do what was reasonable, he actually managed to take the right action. Perhaps it’s not much criticism to say someone doesn’t live up to Petrov’s standards, but nonetheless, if you blindly trusted the admin team, you didn’t live up to Petrov’s standards.