Conway made one also, in his first level pack ("I am not A.T., but close enough"). And Isu, in Isupck02 ("I am A.L. (A Lemming)". In fact, we reviewed both of those. Garjen02 Level 9 is also a remake of this level, although I think it tries to stick as much to the original as possible.
Anyway, I think the point was that it's a commonly imitated or built-upon trick for whatever reason, moreso than some other tricks.