@Anythingcando Because no one, absolutely no one is allowed to doubt or treat the main character even remotely badly. Every other character is only allowed to bask and genuflect in his presence and never have any agency of their own.
It sucks that Harold was treated that way, but Erica's reaction was literally what he was aiming for. And even then, she didn't react nearly as bad as you'd think for someone who's betrothed openly and proudly proclaimed that he murdered innocent people. There's also complaints about her acting holier-than-thou while doing nothing for some reason. I guess I don't know how you're supposed to react as a moral person towards someone who gloats about his IRL killstreak. Before learning the truth, she likely had no idea what to do since their engagement is for the sake of her people.
As for Zen, once again, you can never act in any fashion that derails the protagonist's plan in the slightest or else you're an antagonist. The protagonist's allies must all be puppets who function to his every whim because he knows best.