Idk I feel like Erik is amazing but like you said he isn't perfect which makes him more likable, if he became any more perfect he wouldn't seem human. And I generally feel like he's doing the best he can when it comes to her trauma, like getting to know her, asking what she likes and more importantly what she dislikes. He also tells her he'll be careful on reducing the things he does unintentionally that makes her uncomfortable.
But most importantly, you gotta take into account the first time he learned that Miesa was acting, he didn't know what to say because he couldn't fathom what she has been through.
From the jump, he didn't know how to comfort her, but him trying to know her and her finding herself again is a way of them both growing.
Which is why this one seems so amazing in comparison. He has so so many good traits and moments, but I'm not loving him so far. I wish he'd properly showed appreciation for how she humilated herself to save him from the being accused of treason. I wish he wouldn't demand she tells him everything but not once (up to the chapter 28) tells her that he actually likes and cares about her for herself. There have been other moments I can't remember right now where I've already felt a bit uncomfortable and bitter about his behaviour. Because she's an extremely traumatised, inexperienced and insecure female lead and a lot of this might be fine for a mentally healthy and confident MC in a position of equality but is a bit worrying for her.
I totally acknowledge how many ways he's really good and trying really hard to figure out how to make the best choices in a complicated situation, I really do. I just still often feel uncomfortable with his behaviour.
Anyway, I know a lot of people love him and that's fine, please carry on enjoying him!