This is hindsight. In 1948, Shannon and von Neumann were obviously aware of a deep analogy, but nothing more than that. The position you take was made popular by Jaynes only in 1957, nine years later.
Made popular by, yes. Invented? Not according to Jaynes, who saw it as implicit in the work of Gibbs.
This is our monthly thread for collecting these little gems and pearls of wisdom, rationality-related quotes you've seen recently, or had stored in your quotesfile for ages, and which might be handy to link to in one of our discussions.