Personally, I don't find Timothy Ferris' motivation level that impressive- on the contrary, I think he's dangerously lazy.

You are wrong. Any definition of 'lazy' which makes your claim true would be ridiculous. And, in case you were wondering, suicide bombers aren't cowards either.

but he's just copying methods from already published books

Bravo.

that he doesn't understand well

Unsubstantiated claim that I have no reason be believe. His understanding seems to be more than adequate, even if oriented more towards practice than theory.

He's using relatively dangerous and ineffective techniques

This seems false (except the parts that explicitly say "this is dangerous", "don't do this without medical supervision").