Why are some people in the Japanese self learning community so down on Heisig?

There are some legit criticisms of Heisig's RTK, however almost all of those criticisms deal only with the book and most if not all are corrected thanks to online sites and communities like RevTK.

Edit: I just found and read Ken's Blog Post and it's obvious he's not insulting the RTK method. He's using humor to get points across and is recommending RTK as important the same way he's recommending Core 2000.

Plus, for every hater of RTK, you get awesome people like this guy who freaking love RTK -