After some discussion and reconsidering, this is my stance on the whole Yrel and AU Army of the Light. Note; they’re not officially called “Lightbound” in the lore, that’s what the Mag’har call them according to Geya’rah, I’ll use that name for ease of classification. While the Lightbound are more right than wrong, there are a couple of big issues. I think there’s a lot of directions their story could go, but a one-dimensional “fanaticism/dogmatism” arc would be poor writing and wasteful.
What the “Lightbound” get right;
- Legitimate grievances with savagery and the Orcs: They have good reason to call the Mag’har savage due to their experience with the Iron Horde, plus the non-Iron Horde tribe the Laughing Skulls were violent xenophobes and Gul’dan’s now-extinct tribe was vicious (except for the shaman). There’s Mag’har who still skin people in the beginnging of the Mag’har recruitment scenario. The other cultures are quite warlike and aggressive from the Gorian Empire to the Botani. The united Mag’har are less advanced than the Draenei but not primitive – around the Industrial Revolution. Wanting to make Draenor safe and unified is a good thing.
- Their higher power: Unlike most religious disputes irl, the existence and abilities of the higher powers aren’t in question (in-universe) for either party. Following the Light is as viable as the elements, and it clearly has power.
- Teamwork and lack of cruelty: Yrel and the “Lightbound” don’t have backstabbing and sadism, the former something even the Mag’har aren’t free of.
- Leaving some culture alone: Yrel’s group clearly aren’t trying to wipe out the Orcs as a race, and the only change they pushing for is following the Light. They’re not taking away the Mag’har language, their architecture nor customs besides their shamanism (given Auchindon, the “Lightbound” might even give leeway for the Orcs ancestor worship).
- Permitting Arcane: Since people can use Arcane and Light, as Lightforged Draenei can become mages, it’s possible the “Lightbound” still permit arcane and would get along with arcane beings such as Aluneth or the Titans.
What the “Lightbound” get wrong
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Join or die: The big one, and the one that makes certain fans ignore everyhing the “Lightbound” get right, due to the violation of free-will by conversion under duress (claims of brainwashing currently unproven). In light (pun not intended) of the point below, followers of the Light can’t make the “my way is the only” claim so can’t make. The Light canonically isn’t solely responsible for the creation of the universe, so doesn’t have exclusive ownership… though it’s not clear cut since the Light is the first cosmic power (maybe until we learn more about the First Ones).
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Forced Culture Change: Depending on what’s being changed and why. This point is under protest but a point conceded, because the Mag’har are likely being forced to give up their shaman abilities. But not being forced to give up much else, so this point is iffy.