The Helium thing is surely enticing knowing that they're offering what? $20(if I remember correctly) a month for unlimited data? That's like super cheap, especially in the United States. Though I haven't dug deep enough to know what the 'catch' is. There should at least be some downside.
Whatever the downside might be, I guess they must have thought about it before setting out to make it, all I know is users are earning some tokens of $MOBILE for using it, which can be withdrawn and traded on exchanges where it is listed. I guess they're trying to be innovative in a unique way just to make people use their products, it's fair for me.
Usually such projects have unlimited emission and soon depreciate in value. Remember the project on Solana "go and earn". At that time there was a lot of hype, but in time this project was forgotten. Where you have to do something and earn money, it is good only in the early stages. Later it will be very unprofitable.