Hershey bars have very little chocolate and taste chalky to most people who are familiar with other types of chocolate. Most people are unaware of how little cacao that Hershey Bars have in them, as well as the inferiority of the ingredients that they use as filler in thier bars.
Hershey is not being deceptive. The question that begs to be answered is, how is it being deceptive? Nothing about the product claims that it is a cocao bar. It claims that it is a chocolate bar. Furthermore, if people are going to stuff their faces with these sugar bombs, does anyone really think there is the slightest concern over 1% of some product that most people don't even know what it is? This is all much ado about nothing.
Everyone loves Hershey Bars so even though they have a minimal amount of chocolate they are still a favorite among people. Not everyone's taste buds like more chocolate it's more about the ratio of chocolate they like. Hershey would only be deceptive if they were lying about the amount of chocolate in a bar which is not the case.
While Hershey's bars are only slightly above the percentage of cacao required by the FDA, they are still within the legal minimum limitations. Hershey is not being deceptive by calling these bars chocolate. A full list of ingredients is listed on the bars, any person that wants to can see that cacao is not the lone ingredient for a chocolate bar.