Granted, though, that doesn't explain all usages of the phrase "Jedi Knight" in the OT. "For over a thousand generations the Jedi Knights were the guardians of peace and justice in the Old Republic." You have to perform contortions to render that line fully consistent with how the PT ended up being.
but the Jedi were guardians of peace until they were forced into a manipulated war. How is there any inconsistency?