What's up with queues?

Why are queues back? There aren’t any more people than before. If there should’ve been a queue it would’ve occurred when Dire Maul came out. My only answer is they’re not layering and that’s resulting in queues. Maybe layering requires servers they need to use somewhere else? The problem is it’s been gone for a long time, why bring it back, unless there is some agenda?

my guess, layering has been completely removed.

first time grobbulus has had a queue in weeks. (when I’ve tried to play at least)

It’s raid night.
Layers still exist.