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

I was a bored while doing RTK and I began to doubt it. So I decided to do some Tae Kim with accompanied vocabulary.

And I must say, there was a hell of a difference in learning vocabulary I knew kanji for and the rest. That pretty much convinced me that yes, doing RTK has its merits.

No, I don't have a study and everything in this post is from my experience only and your mileage may vary...