On clarity

Haught has this nice endnote in which he chides Sam Harris for insufficient clarity when he talks about happiness (in The End of Faith):

Harris (205-207) attempts to explain what happiness is, but while his writing is mostly crisp and clear, his ideas on happiness are extremely obscure.

Now to be honest, I'm not totally out of sympathy with this, for reasons discussed on other occasions, but all the same ... isn't there a certain irony here? *smh* Or is it just me?