Listing 30 "must read" books is great, but nowhere in the article does he state his credentials. Is he part of a successful start-up? If so why doesn't he say s

Listing 30 "must read" books is great, but nowhere in the article does he state his credentials. Is he part of a successful start-up? If so why doesn't he say so? If not why would I read the same books that have not helped him?