Honestly I haven't read the book or checked the spreadsheets, but neither of them answer the question: Are the findings true? Are they of value?
To make an analogy, we don't go back to Maxwell's writings or his calculations to figure out if his electromagnetic theory is true (within its domain of applicability). If no other scientific work were ever connected to Maxwell's, we still wouldn't know if it's true, or at least, his equations would merely be amusing factoids. His equations gained truth and value, along with a list of limitations, through their predictive power and track record.
To make an analogy, we don't go back to Maxwell's writings or his calculations to figure out if his electromagnetic theory is true (within its domain of applicability). If no other scientific work were ever connected to Maxwell's, we still wouldn't know if it's true, or at least, his equations would merely be amusing factoids. His equations gained truth and value, along with a list of limitations, through their predictive power and track record.