Geya’rah still stuck with Sylvanas despite seeing Sylvanas do something similar to what she claimed Yrel did.
While you have a point she has no attachement to the Burning of Teldrassil, I was talking about Sylvanas’ attempted enslavement of Derek Proudmoore and what she did to Baine and Thomas in response. Baine told all the Horde leaders what Sylvanas was doing, but Geya’rah’s all “Nah, she’s a strong Warchief.”
It kind of makes sense for Yrel’s crusade to extend beyond the end of the Iron Horde when the former leader of the Iron Horde is walking around scot-free. No need to go “sins of the father” when the original war criminal is still alive and kicking.
Also, while this person gets a few things wrong, check out this detailed summary of the Mag’har recruitment scenario; Just finished the mag’har scenario, the draenei lightbound orcs did nothing wrong - Community / General Discussion - World of Warcraft Forums (blizzard.com)
Do you think the Light destroyed AU Draenor rather than the aggressive industrialization and deforestation the Mag’har were doing for 30 years, or the huge amount of fel energy pumped into Taanan Jungle, or - most likely - the simple degradation of an alternate timeline.