Why Dark knight alignment?

[Manly Man]

Personally, I do think you're right, so I usually just waiver good or evil alignment restrictions in my own games; just because you're a Dark Knight doesn't mean you're evil (Cecil Harvey being the best example of this, the only evil thing he did was he didn't speak out against his orders to raid Mysidia at the very beginning, and even then he was regretful), just like being a Holy Knight shouldn't mean you're good. Point in case: Delita Heiral (a solid True Neutral), Wiegraf Folles (straddling the line between Lawful Evil and Neutral Evil), and Folmarv Tengille (Lawful Evil through and through) from Final Fantasy Tactics. Delita became a Holy Knight, while Wiegraf was a White Knight and became a Templar, and Folmarv was a Templar from the start, the both of them even having holy sword techniques.

I mean, yeah, Tactics is probably the darkest entry in the franchise, but still.