Can you elaborate on this point? "Where does Helium token derive value? Their economic policy resembles a utility token, where transacting on the network costs

Can you elaborate on this point? "Where does Helium token derive value? Their economic policy resembles a utility token, where transacting on the network costs a fixed dollar value per packet, and these 'credits' are derived from burning the native network token HNT. There are a few other burning mechanisms as well. The credits get paid out to the node which routes traffic. Helium nodes costs less than $2/month to operate (5-10W electricity)." You say transacting on the network costs a fixed dollar amount. Does that mean people are paying USD to use this network? Who is paying these fees in USD? Trying to disentangle the financial/incentive aspect.