Even when it's pretty much established that Vorlons as a species are no better than Shadows, and Kosh was actual exception, they are still repeating the mantra 'Vorlon good, Shadow bad'. I mean, what Shadows did to Humanity in particular? They responded to Vorlon actions, which included time travel and tearing reality apart (thirdspace), which is actually more damaging to galaxy than some cloak and dagger schemes in the shadows.
Vorlons basically act like they have right to be masters of all creation and they can't do nothing wrong, while Shadows seems to act more like a teachers, a guides, even if in ruthless and stern way. So, really, which ideology is worse?