Delivering food has a cost and is a service. Before things like doordash you could only get delivery from select locations, by creating a network of drivers you can now get delivery from most restaurants.
Does doordash exploit people and restaurants, yes. However, providing a delivery service is not rent seeking there is something being offered.

I played the prequel (at least it looks like it's tied to this game) called Demon Turf. The animation was really interesting and the world building was cool, but the platforming itself was only okay and some of the boss battles just felt broken. Hopefully they learned from that game to make this one even better!