This is actually very important. If you want more people to be on the network, you need it to become popular. Having an online economy where you can reward creativity will hopefully draw in popular creators.
These creators then bring over their followers to #Nostr . Zaps fuel the creator-economy which fuels Nostr adoption.
And, of course, it makes charity work very easy. And transparent!
I don't see how this protocol won't be ubiquitous within 5 - 10 years.