And even if it were a cult (AFAIK it's not), why would it be "the mother of all cults in America"? AA started in the 1930's. The Mormons and JW's, which are much more cult-like, are much earlier in time, going back to the 19th century. And there are probably other cult-like movements which are that old or older.
So, to make a long story short, NO.