I don’t really understand why you think having financial incentives to avoid bad ratings and deliver food warm is bad?
Incentives can cause perverse outcomes, but it’s worse when you are not in control of the outcomes at all.
Unfortunately though, those same incentives also incentivise risk taking and dangerous driving.
What are you suggesting then? A company that is selling warm pizza with prompt delivery should not do anything to incentive employees to deliver on that value prop?