At this moment in time 0 cars can utilize this "premium gas".

This isn't communicated well, the author points out that it's marketed as better, but you have to dig into the technical details to find out the host must support it as well.

I think most people would be surprised if premium gas actually made their cars run worse, its hardly common sense.

I don't think it has been well communicated that you need to do anything special to benefit from an A2 card.

Isn’t the point of these articles is to determine what is recommended by benchmarking the cards?