And the word 'entrap' is disingenuous. Entrapment is used to describe situations where law enforcement induces someone to break a law they would have been otherwise unlikely to commit.

In this case, the drivers were already breaking the law (opinions on the righteousness of the law notwithstanding), and law enforcement was seeking to apprehend, not entrap.

Maybe not. That might tie their hands in court. It might leave "have the court declare the law invalid" as their only way to win. Limiting your options that way tends to be bad legal strategy (whether or not it would be the moral high ground).

Disclaimer: IANAL.

It seems to me that saying "we did this so we can violate the law without getting caught" is already an extremely bad legal strategy. If their statement was aimed at limiting their legal exposure it wouldn't have included that part at all. If it was aimed at showing that they're morally in the right, they would have said that the laws were bad. I can't see anything that justifies what they said, aside from thinking everyone sees the law the same way they do so it goes without saying.

They probably underestimated the number of people who believe that not all regulations benefit consumers necessarily.