User blog comment:Gundam Legilis/Lessons Learned In Depth/@comment-4010415-20151201235300/@comment-4010415-20151202014047

Basically, what the anon said. Huntsmen are expected not to succumb to the darkness. Not "Huntsmen don't succumb to the darkness and never have." The Huntsman Academies want them to not succumb, and the Huntsmen are made aware that it's expected of them not to, but some do anyway.