The video they put out is extremely cringe. The whole “metaverse” thing is cringe. It makes me believe Zuckerberg is completely surrounded by yes-men who never challenge him and only tell him what he likes to hear. He is truly detached from us normal people and our human experience.
From watching his mannerisms and facial expressions, I get the feeling that he is high functioning but very much on the autistic spectrum, and emulates many subtle movements/behaviors during communication that come naturally to "normies". That's why he comes off as a robot deep in the uncanny valley.
I like to think of it as partly emulating with software some of the communication hardware that neurotypical people have innately. Which is why social interactions can be taxing for those with Asperger's, the extra cycles are draining and distracting, in addition to the necessary self consciousness which also costs some amount of compute.