I've presented animatics of TV spots to advertising clients, and some of them have resembled the new dialog scenes in this series. They're these low-poly, sort of creepy, minimally animated versions of a storyboard to give people a sense of what the commercial would look like.
Now that it's been out for a day, I'm wondering if the low-poly, poorly-animated-mouth scenes were originally just animatics, and not intended to be the final product? But then the studio was like, "c'mon, we have to release this," and they had to just run with the animatics instead of fully animating them.
I'm not sure why they were in such a rush to get this up online. Alien Day would've made a lot more sense, and they could've had more time to polish it.