Earlier quoted context omitted.
Definitely...it's easy for a bureaucrat to say "Thanks for the help, we'll do better next time!" if no one's getting fired.
Yeah. I see what you're saying in the parent comment – even getting this much of a response is a positive thing compared to existing practice, but it's not an overall positive. I suspect they want to avoid a possible lawsuit for unlawfully ticketing legally parked people and hope this blows over because they "gracefully addressed" their (illegal) practices. A really great response would have been, ”Thanks for contact…
One can imagine a stronger version of the above in which the agency is asked to find funds within their existing budget to redress the mistake. However, "thieves! they must be fired!" is not the correct response to public servants making an honest mistake (as opposed to dishonest mistakes, of course, but that doesn't seem to be the case at hand).