I believe it’s more complex than this: governments have some obligation to create infrastructure that’s safe for everybody. Simply slapping a speed camera to fine drivers doesn’t make the road safer. By comparison, the Dutch have a terrific way of designing roads in such a way that drivers adapt to the conditions, for instance through the road surface and deliberately placing vegetation near the road to help drivers accurately perceive their speed.
Not everything has to be a debate; my comment is simply there to add to the conversation in the thread. Perhaps it can be argued that speed cameras in themselves are a form of traffic calming.