Fox News has robust constitutional protections guarding it from those who would seek to measure the truth, and truth-seeking as a general practice is fraught with difficulty, generally ill suited for enforcement action in all but the most extreme cases such as those where it can be proved that the speaker knew otherwise.

The number and of strawberries going into a pastry is a lot easier to measure as a fact, and advertising that makes claims about strawberry content in the course of trade is not so protected.