So do better! Find me an economist who truly believes in EMH and is either not a neoclassical (that's about half of all economists) or makes some real-world economic decisions (like in a central bank) or has expressed his belief in support of EMH after 2008 crash.

I gave you two Nobel prize recipients who actually wrote famous articles explicitly outlining market inefficiencies.

Regarding Steve Keen, I don't have my copy handy, but I am sure it has plenty of additional citations. While it is written in accessible style, it is certainly not unsupported. (I personally think that every student of economics should read him, but it's up to each individual what they want to do with their free time.) Many post-keynesians I have read expressed similar dismay about EMH.