For me the advantage is that for simple cases like the one you mention, it will hardly ever make dumb mistakes like misspelling a CSS property name or missing t

For me the advantage is that for simple cases like the one you mention, it will hardly ever make dumb mistakes like misspelling a CSS property name or missing the return keyword. So it will not only type faster than me, but it often bypasses the "OK, it's not working, let see what I missed" phase. This high-level approach usually breaks down for more complex scenarios, but for those, you can often explain with some detail how you want the code to look like, and it will give you the code and auto-correct any glaring mistakes you made.