Well said, @stevensonmt
The help category, in my mind, should mostly be beginner focused. "How do I do X?"
The code review category is for intermediates. "How do I do X better and faster?"
Having all code reviews in one place is very useful as people can look through to find out improvements they can use in their own code. It's not easy to separate help topics from code review ones.
Code review is super important for people to get better at the language, especially since the biggest thing with Rust is figuring out ways to do things safe and fast.