2.Qe2 has always seemed pretty junkie to me. After 2...c5 white just gets a closed sicilian where the queen has been prematurely developed to a less than optimal square. White can't get much of anything in the closed sicilan at the best of times, so I don't know how this could be desirable.
White can play a King's Indian attack with 3.g3 instead of a going into a Sicillian.
Sure, but the king's indian attack and closed sicilian are the same thing.
Call it what you like, white has wasted a tempo with Qe2.
learning openings is about understanding, not memorizing "10+ moves"