Yeah, like "all Negroes are stupid" or "all Jews are calculating bloodsucking bastards." Hyperbole my... (will finish the sentence after Lent.)
Please, note that the prophet which St Paul is refering to, was a Cretan himself. It's a different thing to make an exaggerated statement about one's own people (and automatically about oneself) and different to make it about some other group.
OK, end of offtopic.
Well, maybe you are right. My apologies for an emotional and not very well thought-off knee-jerk reply.