Enough, though, so that he and Dick have begun to disapprove of each other.

不过，够了，以至于他和迪克开始互相不赞成。

" To look down on something" here means to disapprove of it, to think that's not good enough for you.

“看不起” 这里的意思是不赞成它，认为它对你来说不够好。