Given that he is asking for feedback from others who decide to try it, and on his blog warns that he is not sure how it might work for others, and is offering to provide samples to people who agree to have blood work done before and after trying it for a week, he seems acutely aware that while he thinks it contains all he needs, he does not yet have sufficient evidence to be sure.

He's not written a scientific paper - don't assume that every single word he has written is meant to be interpreted in the strictest way possible.

By all means be sceptical, but while he might very well be wrong, at least he appears to be earnestly looking to identify and correct any flaws which already puts him far above a lot of charlatans selling risky diets.

No, he says it has all of the ones we know about. He emphasizes the fact that there stands to be a lot of learning to do and bugs to work out.

Right, but those sophisticated replicators are so sophisticated that they tend to be rather tolerant of their input.

There's no reason to think we can't science out what that input needs to be, or at least to be able to find one or more valid subsets of input.

This is a rather large improvement over what most people do; one typically applies little to no science whatsoever. :-P