I mean, shit, that is true.
It all just boils down to Blizzard can and will do what they want with their lore and gameplay, because it is their lore and their gameplay that they created. If they want to make a Dark Ranger that has a healing or tank spec, they will. If they want to make a Tinker that has abilities using Azerite or ghost busting or whatever that hasn't existed in the game, they will. If they want to make a Necromancer with Blood/Bone/Poison specs, they absolutely will.