I’m hoping that spending $100k on a vehicle that I don’t need paint correction beyond what’s necessary for application of PPF.
You would be very very very VERY surprised.
Fresh out of the paint booth, a car's paint could have a variety of issues that require correcting. This could include dust specks, bubbles, streaks, runs, orange peel, etc. The factory *USUALLY* does a pretty good job of correcting these to perfection, but everyone can have an off day, and it's not guaranteed. It's common for factory-fresh cars to need paint correction for the listed issues.
During transport, there can be a variety of mishaps that cause minor scratches, chips, and swirl/haze that get added to the paint. Look at the the photos of the US cars that were recently delivered in Florida: they are covered by a fine layer of dirt. *ANY* contact with that paint surface will result in the dirt grinding fine scratches into the paint.
At the dealer, they subject the paint to further damage: washing with old/dirty cloth, questionable washing/drying procedure that doesn't minimize contamination, and any waxes/sprays they put on at the end to give it an extra shine. Anytime you touch the paint, you add swirl marks. Poor quality products/cloths/pads/techniques add more swirl marks than necessary. When I picked up my AMG GT53, a car that was well over 100k from Mercedes of Manhattan, they had "cleaned" the paint with an orbital buffer as part of pre-delivery prep and added a ton of fine swirl marks. They were proud to tell me this because this was somehow deemed as a luxurious extra touch. From experience, the swirls were fine enough to not be a major issue and my detailing guy corrected it with a light buffing all over the car.
Granted, I'm a little OCD when it comes to stuff like this, but I want to keep my nice things nice for as long as I can.