Logic is not your strong suit, is it. (notice that's not a "?") Yes, it's a "take-off", a gentle dig, etc.; that, in no way, shape or form means it's a scam.
The author is simply utilizing the well-known, time-tested principle that humor, especially when it's based on fact and truth, is an effective way of making your argument. Labeling it a "scam" is simply you demonstrating your own bias.
However, Ben Ficklin knows about the Heartland Institute, which is a very Conservative organization that challenges the science behind man-made global warming.
So, I'm thinking Ben just used clumsy wording in his Comment.