To the other, The Buick GN has been listed as one of Buicks few Muscle cars for more than 20 years now..
Reguardless of what someone "considers" it to be out of personal opinion..
Superchargers and turbo's have been around for more than 80 years, so, the argument that this or that is not something or does'nt count because it's not N/A has long been without merit..
Just as the V6 argument is..
Last I checked FI dominated drag racing... Nuff said...
Even the earliest Corvette was powered by none other than a "blue flame" I6..
Definition of a "Muscle car" as per webster: "any of a group of American-made 2-door sports coupes with powerful engines designed for high-performance driving"
Muscle car - Definition and More from the Free Merriam-Webster Dictionary
Just as people have their opinions, so too, do people sometimes disagree with those opinions..
The point is there's no sense in acting like an ass-hat because people strongly disagree with your opinions or comments..