No. Not fully good, not fully bad. They are merely the opposite extreme of the Sith. Sith tend towards being passionate about all aspects of existence, but especially whatever brings them power and that gives them the freedom to do as they please unrestrained by morality or creed other than their own. A code which values strength above all. Meanwhile the Jedi preach control and emotional control approaching detachment to an outside observer, to a nearly ascetic degree as a path to following the Will of the Force, in which you will find your ultimate peace.
When you view both orders through their respective lenses you can see that they are just two sides of the same coin and obviously the Jedi are meant to be the 'heroic' option, however as the movies, shows, and books, portray them, eventually the Jedi lost their focus, they became complacent in their role and began to believe that unless one was a Jedi they were heretical. A mirror to many real world purges of similar sorts throughout history. Intentional to make someone look at who they always held as unquestionably the 'good guy' and ask, "Are they as infallible as we have been led to believe?" Not only as individuals, because obviously no individual is infallible, but also the teachings of the institution. Look more closely at the Jedi code line by line. The mantra they have drilled into them from the moment they are taken from their families as young children but I want to focus mostly on the most grievous line, the first line that "There is no emotion, there is peace." It sounds nice, but when you take a youngling who is likely only a few years old, and teach them to reject all emotion in any situation for peace, how well can that truly end? How moral is that? Can you really defend that as a 'good' action?
