It’s language, must be. As an American, I blame myself.
My statement was more about the practical reasoning of someone who is stopped while carrying an illegal substance. Refuse to answer questions, as is your right, and you might get the dog, which is a problem. If there are no illegal substances in your car, then if they get the dog, it’s not a problem.
I think all drugs should be legalized and that it should be much harder than it currently is for cops to search people and their property. If I ever come upon a DUI checkpoint, I will smile and refuse to answer any questions, and hope the cop isn’t a dick.