If you want to get that narrow, then why not dismiss my comment by saying that they are not literal locksmiths? The locksmith paradox is about underestimating the expertise behind a quick result, and that expertise can include extensive preparation.
The paradox is resolved by considering the expertise, which took a long time and much effort to acquire.
With the heist, the analogous paradox is somewhat weakened. There is hidden effort, but it’s highly specific to the actual target task.
With the locksmith, the hidden work is done on entirely separate tasks and so on, which happen to provide the necessary skills for the current target task.