Earlier quoted context omitted.
Helium has practical uses - a cheaper alternative to cellular data for stuff like Lime scooters.
This can be done without the need for a blockchain. Adding a new technology + blockchain + a coin still makes it ponzi scheme scam, even worse when the price of this coin comes crashing down.
The only reason Helium's LoRaWAN coverage is expanding rapidly is due to the crypto aspects of it.