The uncertainty referred to isn't philosophical dogma, but lack of personal agency. Pursuing autarchy increases our personal agency, thus reducing uncertainty to a degree about events which may occur in our future.
QuotePD16, Peter Saint-Andre translation
Chance steals only a bit into the life of a wise person: for throughout the complete span of his life the greatest and most important matters have been, are, and will be directed by the power of reason.
Regarding dogma, you're absolutely correct. Here's one example:
QuotePD24, Peter Saint-Andre translation
If you reject a perception outright and do not distinguish between your opinion about what will happen after, what came before, your feelings, and all the layers of imagination involved in your thoughts, then you will throw your other perceptions into confusion because of your trifling opinions; as a result, you will reject the very criterion of truth. And if when forming concepts from your opinions you treat as confirmed everything that will happen and what you do not witness thereafter, then you will not avoid what is false, so that you will remove all argument and all judgment about what is and is not correct.