I don't think dealerships can go too nuts on warranty reimbursement, like they could decades ago.
They have warranty clerks (Service Dept employee) who review everything to see if it'll get reimbursed.
Then the Factory Rep looks through them.
Last Dodge dealership I worked at rarely had a claim denied, but they may not have been as aggressive as some places are.
There was also a "goodwill" allowance for some scenarios.