Just watched the vid... something seems fishy that all of a sudden they have a bunch of workers, when the reddit guy who did an unaccompanied tour didn't report many people actually working.
Guys, guys, guys! They were obviously off doing a team building exercise! It takes a lot of coordination to descend upon anything like a swarm of locusts and not get in each others' way. I hope they release a video of that, by the way. A swarm of 22 locusts... Can you imagine it??!?