The video just shows that the AI can perfect attack mechanics - it's still a simple AI. If deepmind was thrown at the game, it could learn to deceive/cheese/micro/drop and really do some serious damage.
I hope DeepCraft could do those things, since no other AI can at this point. And I hope it can do them better than any human. And I hope that DeepCraft can pivot its strategy on a dime when needed, in response to the human doing something. And I hope that it can do well against the myriad of play-styles that professionals have developed across the the three unique races.
My point is that DeepCraft is still gonna be quite a ways off, and is going to involve a lot more than just learning how to micro, cheese, drop, etc. (Which, by the way, would be quite a feat to even develop an AI that can learn these things since StarCraft has such a huge search space)