1. People obviously know bacon is fatty, and buy it exactly for it, but still somehow hiding that fact seems beneficial. Moreover, it looks like at the base of this fact lies the anti-fat stance which now has been proven to have rather weak factual basis. I.e. we have a marketing trick counter-acting the effect of the bad propaganda.
2. The government-mandated rear window is an example of a regulation that solves non-existing problem (if people didn't want fat they wouldn't buy bacon) by ineffective means (people that are so naive as to not know bacon is fatty surely wouldn't also know to look for that back window - how often you actually turn over the packages you buy in the supermarket?). Yet a lot of educated well-paid people are working tirelessly at implementing and supervising such regulation and they persist for years. Because otherwise what would happen? We would never know bacon has fat!