It’s correlation vs causation. You see 99% of the people playing human and think it must be because they’re human that they’re there.
I see 99% of people playing human and recognize that they were human before MoP dropped and we just came out of cataclysm where being human was like a free 600 CR injection.
Going orc won’t gain or lose them rating. I’m just stating that historically in late mop it’s a meta pick for the reasons above. It’s very competitive, and horde is a very equal faction that is more favoured in damp seasons.
It’s just a waste that the modern playerbase is too comfortable to branch out.