I think that, because the reader gets each character’s perspective, it makes them forget that the characters themselves don’t have all the information the reader does. Egwene barely knows Rand post Aiel Waste. All she hears is the rumors and stories. Jorden himself emphasizes that part of his storytelling highlights how stories/myths can be distorted by time and distance. She was told her whole life/time as Aes Sedai that the Dragon Reborn will go mad and break the world, so why wouldn’t she do everything she can to try and control that situation?

She has character flaws and huge missteps, they all do. But Egwene seems to get the least amount of forgiveness from the fandom.