"It's the law and you can leave" is, unfortunately, not that argument. I agree this argument comes down to arguing an is implies an ought, which is usually

"It's the law and you can leave" is, unfortunately, not that argument. I agree this argument comes down to arguing an is implies an ought, which is usually invalid and is certainly invalid when the ought is the thing under discussion. But your gross exaggeration intended to refute it does not work as a useful counterargument. You assert it is directly comparable, I explained why I believe it isn't. You could have guessed people would not consider them directly comparable and the net result is that your counterargument is not convincing. Maybe after further discussion you could convince others they are comparable, but that's an unnecessary distraction.