You're right, it shouldn't be necessary, but their first sentence...

>I was convinced for a while there as I scrolled down that this was a joke. "Good parody!" I thought to myself. Then I realized to my horror this is actually serious.

...is pompous and holier than thou. Being unable to see the value in this infographic doesn't mean it's trash, and I think it's unnecessary to comment with such an arrogant attitude like that, especially when it's obvious they're just either not the intended audience or they're misinterpreting the goal of the graphic.