What? Saying that Yellow No 2 (aka dent corn) isn't suitable for human consumption is like saying wheat isn't suitable for human consumption. Can you pick a stalk of wheat and make a meal with it? No, of course not. It needs to be milled into a grain first.
Yellow dent corn can't be eaten off the cob like sweet corn, but it is certainly fit for human consumption. It needs to be first milled into a grain, just like wheat.
Can you pour dent corn into your fuel tank and make car go vroom? No, it needs to be processed and distilled to make ethanol, just like it needs to be milled to make food.
Corn starch? Yellow No 2.
Corn meal? Yellow No 2.
Corn syrup? Yellow No 2.
This is all explained pretty well in the link you shared. Did you even read it? Did you expect everybody else not to?
Seriously, is this sarcasm or something? Did you forget to put a
smiley in the post or something.