Some of this seems plausible—even expected—but other parts feel implausible. It's hard to believe that "Priority Delivery" does literally nothing. Optimizing payouts down to the lowest amount drivers will accept, on the other hand, is entirely believable. Also, given Uber's well-known microservice architecture, it seems unlikely that a random backend engineer would have deep insight across multiple independent systems, including money flows. My guess is that this was written by a real employee who took some liberties with the truth.

When I read the predictive tip based fee reduction I went, "yep thats what I would do if I was unscrupulous and worked there."