Putting that warning on there as pre-emptive warning is sorta like how Wal*Mart puts explicit lyrics warning lables on everything rap or Heavy Metal. Iron Maiden has one song on a studio album that contain profanity (out of fifteen studio albums) and Wal*Mart put explicit warning lables on everyone of their CDs.
But that's California for you; telling you how dangerous everthing is for you in California yet the rest of the states have the same items an seem to not have any more health issues.

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The United States will conquer Terrorism with the help of God and a few Marines.

Some people, when trying to avoid thinking about those things that cause them pain, turn to drink, or perhaps food, or drugs... I turn not to any of those... I collect action figures, turning my mind to the hunt, so that I might find a mote of peace... Over the years, I've found that alcoholism is much more socially acceptable by far.