Tire mfg date code/sales

I sort of had a similar situation, in 2019. I was buying a 2011 car from a dealership. The car was a one owner low mileage 2011. After doing the money negotiations, I got the dealer to replace all four tires (at his cost), that still had decent tread, but were dated 2011. they were the tires that came on the car when sold new.