I’m confused did you not read the article? The entire premise was that it is ok to put lower 0ctane fuel in a car that asks for premium, as long the car is electronically fueled injected and has a knock sensor, which mostly all cars built in the past 15-20 years have.

Hold on...did you not read the article? The entire premise is that it is not bad to put low octane fuel in a car that is designed to run on high octane.