We’ve had mogs / cosmetic items in the store previously… why is the new one surprising? 
Also, we’ve had things like the Yeti costume with the Virtual ticket and the T-mog that came with Shadowlands. So… nothing new.
This is just like players who were freaking out over an alleged private forums that Blizzard might have. It’s like… okay and? Blizzard being hypocritical again, so what? Nothing new.
You don’t like it, stop paying for your sub. Stop giving them money.