Hmmm... John Sexton likes to caution people not to try to guess at what Adams would think about x or y. But I'm not sure he'd agree with "realist" either, David. His philosophy was to create a print that conveyed what he "saw and felt" and called most of his images/prints departures from reality.
Just throwing another wrench in
Interestingly though, the "departure from reality" concept kind of brings us full circle in the thread, back to the original idea that even concerning "realistic" or f64 subject matter, prints containing areas (even large areas) of pure black or white are perfectly ok as long as they serve the photographer's purpose/aesthetic (as opposed to being unintentionally necessary due to poor technique).