No, it’s to stop the nonsensical whining about “faction balance” and the suggestions that used to come up for faction queues.
Overall, the factions are balanced. It’s just that because so many more hordes queue for AV than alliance does, this messes with the queue times.
Oh right, and of course the illogical justification some players used for AV premades that their “faction is the smaller one”, which any indication to go by shows that they aren’t really, at least not in any meaningful way. That small difference in the split is well within an acceptable margin of error.