Joined: Mar. 2005
Huh. I can only guess, but I'll guess the writer of that "thinks" that making cells and larger structures would require additional information beyond that needed to make the required proteins.
AFAIK, DNA directly provides formulas for RNA, and indirectly (via the RNA) for proteins. It's also a template for making copies of itself.
Structures made out of the proteins are, afaik, simply a natural consequence of how those chemicals interact with each other and whatever else is present in the cell.