Literally nobody wanted the orcs to join the Alliance, not even the alliance players. It was just a theory that was now confirmed to be false as
"Ahhhhhh! The chiropractor in Orgrimmar has done wonders for my back." is one of the /silly emotes that the orcs get.
What's much more salt worthy is the fact that they're only adding in one orc race, meaning one skin tone. There won't be laughing skull, blackrock or any other orc tribes in there.