My theory about this season is:
1. people are slowly buying ROTW and not everyone started ladder on reset day
2. On top of this, everyone rolling warlock so there are fewer sorc/paly than normal, making enigma more in demand
3. On top of this, bots were banwaved multiple times, and rotw itself broke many bots
You don't have to call #3 a theory. Many bots were strictly screen readers that only worked with legacy graphics. Now that ROTW doesn't support legacy graphics, they are going to have to rewrite some things.