Rather than a pronouncement of the level of enlightenment of American citizens, this is an indication of their gullibility and stupidity.
I'm surprised the numbers are not higher considering the amount of effort the media has put into selling this idea to the morons.
Once the laws are put in place to cripple the economy and these dolts are huddled under blankets with no jobs, no gas in the car, no food, light, or heat in the house, I doubt that it will occur to them even then as they starve and freeze, that someone just might have been lying to them.