Just so, though the WECSOG art itself certainly predates the term, and probably even language itself. It's ancestry can be traced back at least as far as the tool-bearing *caveman* who found that he could rub the branch or bone he was using against a rock and reduce its diameter where he gripped it, giving him a more secure grasp and letting him deliver a more lethally powerful blow. Eventually, that sort of user-modification personalization was applied to firearms as they came into use.
Accordingly, the slogan: WECSOG: so easy, even a caveman can do it...
Would it be all right if I quoted you? And I warn you, I most certainly will (with your permission ;>)...