Cut the poop Stories.
In most parts of the world what makes a car a "Classic" is not their "architeture". That is actually garbage. What defines a car, a classic, is their age. In many places, even in some classic car clubs, the age is 25 years old. Even so, the NSX was added to the acceptable classic car list. The "Youngtimer" you say, is for cars that have 15 to 20 years, which are old cars too old to just be "old", and not old enough to be a classic.
A classic car is not defined by technology, neither is by their "architecture". That makes absolute no sense at all. Technology can be classic, and those early 1980-tech cars are as much as classics as the analag ones.
Time moves on, and cars that once were not classics, now can be too. And yes, it's age. Not technology. If technology means something, a 1958 Cadillac Eldorado Brougham should never be a classic, because it had a lot of tech in it's time.
We're in 2017. 2017 - 25 = 1992. That means, today, 1992 vehicles can be considered classics. You agree with it or not.
Edit: And to make my point valid, in almost anywhere in the world, that has different plates for classic cars, you can get those for a 959, for a R32 Skyline, and even for that 1983 Ford Escort.
Here in Brazil, classic cars are identified by their black license plates, only given to 30+ years old cars, with more than 80% originallity.
And this is a Fiat Uno CS 85, that earned the black plates.