Old=good is a great mentality specifically when standing the test of time is an important factor. For the most part, the old code that's still used today is only still used because it's proven good, whereas it's a grab bag with newer code. And that's the cause of the unwarranted nostalgia thay you're rightfully criticising.

It's like with music. "Oh, the X's were the best decade for music, today's music is garbage". No, 90% of everything is crud but unless you're an enthusiast, once enough time has passed, you'll only ever be exposed to the 10% that isn't. 50 years from now nobody is going to be listening to Cardi B.