Mainstream (neoliberal/monetarist) economics has abundant academic proponents and is demonstrably flawed, so I am not sure counting the number of academic proponents is much of an indicator of anything other than what is academically fashionable.

In a similarly patronising way to your comment, I suggest checking out http://bilbo.economicoutlook.net/blog/ if you are interested in reading more criticism of neoliberalism and learning more about MMT than is presented on the wikipedia page.