Unfortunately, the announcement isn't that the robot has the dexterity to put on the clothes itself, but rather that its sensors and other functionality work through clothes, i.e., a hazmat suit.
Or a selling point....
"...thanks to some DoD funding, it's using the robot to test suits like this in hazardous conditions, with an array of sensors on the robot itself able to detect chemicals leaking through the suit."
There's a clear purpose here. Humanoid robot testing of garments intended for hazardous duty. I doubt anyone at Boston Dynamics or the DoD are sitting around pondering how they're going to cloth the obscene masses of robot humanoids they plan to produce.