I think people are reading far too much into this commercial.
It is, after all, a juke-box musical. And most of the songs in the show are performed by the Divas. Its the music they are using as a selling point, not the women. And there are very clear shots of the three boys, right after it mentions "three friends". They are even in the bus, it could hardly be anymore clear than that.
And at the end of the day, its a commercial for a new Broadway musical that is trying to sell tickets, not a PSA for Gay Rights. Whatever they have to do to put the bums on seats and get people to see the show, and hear its message, they should do it.
"I will join this conversation on the proviso that we stop bitching about people. Wigs, dresses, bust sizes, penises, nightclubs and bloody Kylie!" - Bernadette, Priscilla Queen of the Desert the Musical