That’s true. I have two accounts. These coalitions are not always about the players on both factions being the same though.
I’m glad to say this isn’t happening on my server, the world PVP has been great actually, so I’m happy. It is happening on other servers I’ve heard. I don’t know if it’s horde with alliance alts or just guilds grouping up together like it was on my server for the AQ scarab farming.