That's not really irony. It's generally okay to have a self-referential asterisk in rules like; Tolerance, except for intolerance. Free will, except where it impedes that of another. Peace & good will, except where you're about to punch me in the face. Etc. When people argue inconsistency in those cases, it's usually sophistry.
That's not to defend okcupid's tactics in this case. I'm just saying that it's not really an example of hypocrisy.