I don't think hagh really said anything ignorant. He's being honest, and he's simply saying that if he doesn't have anything constructive to add, there's nothing useful he can say.

In other words, the people who don't have the experience to post something constructive probably shouldn't post. But instead, it's up to the more experienced players to be honest and leave some constructive criticism. If they have something helpful to say, but don't post it, then that's a different issue.