I wonder if this depends on the Hertz franchise location? I've rented EVs from Hertz at the Fort Lauderdale airport twice and had a great experience with things costing just what I expected. It was a great way to learn about EVs: my new car is a Volvo C40 mostly because I had such a good experience with a Polestar from Hertz.
I don't think "twice" is enough to be considered data in support of any point when we're talking about millions of total rentals. Even if they screw this up (intentionally or otherwise) with 10% of all rentals, you're still unlikely to have a problem with only two experiences.
Of course there must be. Rental agencies do incur cost to missing gas, car damage, etc, and they must track incident cost accrued vs incidental cost billed to customer. If B < A, someone gets their ass chewed out. To avoid that, they commit fraud and spread the incidental cost on everyone.
