I think it was serious. Norm was very well-read and his favourite literature was deeply religious and suspicious of modernity (Twain, Tolstoy, Proust).
Yes I know since I look askance at modernity too. But he was seldom serious (in a literal sense) about anything except sports. The seriousness was in the inferences, usually. This tweet (since deleted) if serious, was at least out of character.
