Well we continue with the original theme.
BFA proved the Horde as evil.
The Leaders of the Horde act in a way that is not opposed to the players. Revlandoza for things that the Players do not care about and letting go of things that were a cause for revelry as if they were good.
Blizzard has yet to correct all of that for the Horde.
The Horde is now the "greatest enemy" to be allied against.
Blizzard has to correct that for the Alliance.