I'm putting this article under Protagonism even though it only exists because I raise this point in my critique of Star Wars, since it's a moral analysis rather than a storytelling critique. Anyway, here's why the Jedi are far from the perfect heroes they're portrayed to be, and arguably even more bad than good:
The Jedi support a state.
The Jedi forbid "revenge", by which of course they mean any action that punishes someone outside of immediate danger; they usually disapprove of killing a dangerous murderer or tyrant as long as he isn't in the act of attacking. This is ironic since they support a government, and all governments use punitive violence against peaceful acts.
My main criticism of the Jedi order's spirituality would be the way it seems to revolve around the suppression of emotion. Emotions are not a force for evil; while it's true they can be a source of temptation, they can also be a source of exhortation. Anger, shame, sympathy, and any other emotion can inspire a person to stick their neck out to fight evil, seek self-improvement, or make sacrifices for the less fortunate.
The Jedi have a chain of command; there's no basis for the legitimacy of such a thing in a religious order based on a static creed.
The Jedi forbid romance. This stems from their suspicion of emotion, and so, my same argument applies. There's no reason a Protagonist mage warrior would be forbidden from partaking in reproduction.