Neo-classical economics is merely an approach to economics based on game theory and utility maximization (as distinguished from, e.g., behavioral economics). The article we are discussing is a perfect example of neo-classical economics - it's pure game theory.
If you want to argue that the assumptions made by the article are more accurate in general than the more common assumptions (good information, low transaction costs, elastic supply and demand), be my guest.
If you want to argue that the assumptions made by the article are more accurate in general than the more common assumptions (good information, low transaction costs, elastic supply and demand), be my guest.