I don't see why you would assume so. They were just very active bees. Either there was a flow on or he had a number of colonies torn apart at the same time. I'm sure that in a yard of strong hives the number of bees in the air while shaking bees for nucs is about right.Looks like he is working mean bees or africanized.
Hey, wait a minute, isn't that the guy who posted the thread about CANNABIS?!!!. As a commercial beek I see nothing wrong with what he is doing except I wouldn't have my head in the cloud of smoke( he must have been trying an experiment after reading the cannabis thread).
If you look at the top box he set aside, you can see the excluder.I did have to wonder what was going on when the beekeeper was smoking the bees so much, and I didn't see an excluder, but I'll take someones word for it. I'm glad that someone w/ more experience in this area than I could explain what was going on.