It's very young, sophisticated to a fault, and there are lots of loose screws. There are lots of ways to use it wrong. That said, I've worked with other people

It's very young, sophisticated to a fault, and there are lots of loose screws. There are lots of ways to use it wrong. That said, I've worked with other people's angular code and I can't say that refactoring other people's implementations was a problem. However I can see how a someone without a proper understanding could make a mess of things, particularly if they are also bad at TDD.