> Again, what do you mean? Now it feels like you are just listing stuff or maybe I just don't know what refactoring actually means.

Agree with all your points. For this one, some IDEs support extracting lines of code into a method/function, figuring out what's an argument and stuff like that. It's a pretty nice feature that I don't believe is in vanilla vim, but it's something I can imagine writing a vim plugin for it.