This is the era of my 3 cars, but really they weren't the height of ICE tech. There was a breakthrough in power/efficiency around 2018. I just like how non-fussy the older cars are and how they look.
The the breakthroughs you’re referring to are direct injection, then those come with their own downsides. Either severely reduced reliability (when solely using Gasoline Direction Injection (GDI) injectors) or increased cost and complexity. (When using a dual-injection setup, such as GDI + Port Fuel Injection (PFI))