"New and used vehicles are substitutes. When the price of a good’s substitute increases, the demand curve for that good shifts outward and the equilibrium price and quantity supplied both increase. Thus, increasing the quality-adjusted price of new vehicles will result in an increase in equilibrium price and quantity of used vehicles....Practically, when new vehicles become more expensive, demand for used vehicles increases (and these used vehicles become more expensive"

https://www.nhtsa.gov/sites/nhtsa.gov/files/2022-04/Final-TS...

Being interested in/annoyed at the price of new cars even as a second-hand car buyer is somewhat justified