Well, Qui-Gon IS a bit of a jerk, and even GL talks about how dangerous what he did was. On the other hand, he instinctively knew that Anakin was so important as to justify the liberty.
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I don't think holding to their philosophy proved reckless- on the contrary, that they remained true to their highly altruistic ideals speaks very highly of the Jedi indeed. Anakin went wrong, but from the start that was a known risk of training him. I doubt there was any better approach, with the possible exception of how Obi-Wan treated him, which he did later say he got wrong.