Well, that was fun
And in the initial confusion nobody even knew that the Gygax guys had anything to do with it.
That's something a lot of people seem to be losing sight of - applying restrospective knowledge in hindsight. All we had at first was "Gygax Magazine from TSR - Give Us Your Email Addy!" and scepticism was sensible position to take. Most everybody was pleased to find out the Gygaxes were involved.
Those who are suggesting someone accused the Gygax boys of a scam are not paying attention. The most common consensus is "I'm glad to hear it wasn't somebody abusing the Gygax's good name as it looked at first that it might be; I'll wait see what this magazine is like".