Actually not true. Read the book to Episode 3. In the book Yoda tells Qui-Gon that he was willing to become his student. Yoda was a great Jedi but even he had inherited the same flaws as the rest of the order. The Jedi order by episode 1 are guided more by codes and rules then by the force. Qui-Gon was the exception to the rule. He allowed himself to be guided by the force more then by the code. This is the reason he was at odds with council. Yoda was no different he held to the same code as rest of the order. Even he was flawed and he realized it by time he faced Palpatine. It's reason why at end of the Episode 3 he was willing to become Qui-Gon student. He was wise enough to realize that he still had much to learn. When get to the original trilogy both Obi-Won and Yoda teach Luke to trust the force, to let it guide his actions. Do you know not once in the entire span of the new trilogy does any one say trust the force or that it guides a Jedi actions. So no you are absolutely wrong and it's a common mistake among fans because they don't pay enough attention to the new trilogy. This partly Lucas fault. He wrong the new trilogy hoping that fans would dive beyond the story line and the hints and hidden means with in the movie. Problem is they didn't and much is lost in my honest opinion. It's why I like the new trilogy because it has a lot of depth that add to the over all saga.