Well, then, I would have told him, or someone should have, ... that it wouldn't affect him in the least. Creampies, sloppy seconds, cocklocks, public humiliation, black on white, etc etc have nothing to do with a man's becoming a cuckold. The definition of a cuckold is quite clear, I think.
He might, however, have a ton more responses to his posts IF he included some of those cuckold fantasies.