Well put, but the countermeme ("Hey did you hear that the alpha wolf thing was bullshit?") seems to be as popular or moreso than what it's displacing. I did some light googling yesterday to see if I could find any references of "alpha wolf" before the 40s, and all I could find was page after page of articles exactly like TFA.
I think the same reasoning applies - it is vague and easy to apply and people want it to be true - just for different people.