I believe I read that stores don't encourage self-checkouts very much because having humans around significantly decreases shoplifting. This may be less necessary if we get better AIs for monitoring security cameras.
I've never read anything about self-driving cars being impossible in bad weather, only that no has done it yet. Machine vision systems are not as vulnerable to this btw and that has been improving in leaps and bounds over just the last 10 years.
Lawyers still searched through documents tediously before computers. It was probably even harder then, not easier.
It's at least theoretically possible create a robot that can diagnose and prescribe treatments for a patient just like a doctor. All the video claimed is that they can do statistics and search the relevant research a lot better. Which is definitely true, and see IBM's Watson.
Arguments about what "creativity" means are never useful or productive. But AI that generates music well already exists and is going to continuously get better.