Yes, they have some alien failure modes. But that should be expect, they are an alien intelligence. I might be willing to grant that a lack of ability to reflect on its own level of knowledge is a demerit to it being generally intelligent. But then again it is largely an artifact of training. I suspect if there were a guessing penalty during pretraining they would develop or more readily communicate the strength/reliability of their knowledge.

this is so false that Dunning and Kruger invented a name for it