I wouldn't say that MC is purely rude. Don’t get me wrong, I also didn’t like MC’s behavior but she knew Jayce for two days. He was hella rude (from her pov) when they first met and extremely suspicious on the next day. I can see why her walls were up and she was defensive toward him. We accept Jayce’s behavior bc this is what we were expecting from him from the very beginning and were surprised by MC’s personality.
Still I agree, MC’s personality should be toned down bc most players didn’t enjoy it. She can be bold, even rude sometimes, but it needs to be for the right reasons and not out of nowhere. At the end we all want the game to be the best it can be, but this is the author's creation and their decision is last. If they would listen to us - great, if they will continue the way they see it fits the story more - all the power to them.