Back in the day, American models were perfected over their years of production.
For example, the early Aerostar was mediocre at best, while the later ones were about as good as any vehicle gets.
Our '97, the last year for the van, was built in May of that year, pretty deep in the model run, and has been a great machine from new.
Another good example would be the Citation-bred GM front-drive A bodies.
By the 'nineties, these were about as reliable a car as you could buy.
I suspect that first model year glitches are not as common as they once were.
Development, as well as consumer expectations, are probably more advanced now than they were twenty or thirty years ago.