Don't the Global expansion launches favor US by a lot? For EU those are always at 00:00, thats not a "cozy late morning" :P
Look for example at the BFA lauch times: 00:00 for EU and 15:00 PST for US. I don't see why that would mean staying up for US, moreso for EU.
https://worldofwarcraft.com/en-us/ne...-rule-them-all