The Helium network and associated cryptocurrency were discussed at the end of this episode. Previous guest Andreas Spiess had a video on this over a year ago, and got it right:
To the nearest approximation, nobody is using this network, and nobody wants to use it. But the runup in the crypto gave all the early players good profits just from having their gateways up and running. Why did the runup take place? For the same reason Bitcoin had its runup, I suspect, which is what has always bothered me about this stuff. But Dave likes it, so I must be wrong. After all, the fine art market has operated on the same basis for centuries, and there's no sign that's going to crash.