Fair enough. I don't take much from Hanson, but I agree that insincere signalling is not something we should reward - I personally think that insincere signally is mildly immoral - at about the level of basic Dark Arts rhetoric.

Regardless of the moral valence, if one does something only for signalling value and not because one intrinsically desires the result (e.g. how some folks treat attending classical music concerts), then I suspect one would be personally happier if one would stop the signalling behavior - not that this is always practical.