A few corrections:
400mg of caffeine is not considered a daily recommended maximum, but “an amount not generally associated with dangerous, negative effects” (FDA). Most people can consume more than that and have no significant side effects.
The Charged Lemonade has more caffeine than most any other drinks… When you fill up a 30 oz container with it and don’t add any ice. If you filled up the same container with an energy drink or coffee, it would have similar amounts of caffeine.
Aside from the possibility to associate “charged” with electrolytes, none of the marketing or branding of the drink implies that it’s an electrolyte drink. Personally I would much sooner think that charged means energy, i.e. caffeine and the like, but that’s just me.
A healthy adult consuming multiple of these beverages wouldn’t likely experience any heart issues, but likely would have things like jitteriness and have a hard time falling asleep. And while people with heart conditions should definitely stay away from these drinks, “would go into cardiac arrest after one” is incredibly overblown. If that were the case, the deaths would be in the hundreds or thousands, not one or two.
Panera has only “reduced” the caffeine amounts in the drink by adding ice into the cup because they are now behind the counter, not by changing the formula of the drink.
Didn’t see this until now, but your screenshot actually doesn’t disprove anything. Both sugar and caffeine were reduced by about 40%, which sounds like around the amount of ice added in a typical fountain drink. As others have mentioned, the rest of the nutrition facts are dubious considering that there are fewer total carbs than sugar in the original label. Also, according to Google, there are 4 calories in one gram of sugar, which would mean the original drink should have at least 496 calories, not 320.
Maybe before you call someone a liar, double check your own sources first?