That obvious mistakes can happen is itself a problem.
"How can we make sure this doesn't happen again"
"Its unacceptable than an obvious mistake happened"
that make corporations so full of random rules, because they think it's possible to prevent things like this. What matters is the frequency with which they happen, and how gracefully you handle yourself after it happened.
Sure, the individual doing the check might be incompetent, but that doesn't mean that Raymond needed to be bothered by Mozilla about it - they could have handled it internally instead.
Kinda why it's a mistake to charge money for a process that is demonstrably incorrect.