I guess it's character development? At first he was like "i trust no one" but after getting to know more people like valos and hershel he starts becoming more trustful... ??
Based on build .6 he's really conflicted because of a very obviously SHIT upbringing. But he's still in the mode where he is not able to recognize that his upbringing was bad (something that's often true of abuse survivors who also tend to make decisions and have attitudes reflective of that abuse.)