One second we have reports that it makes people less productive, next second they're more productive. Considering the engineers mentioned are everything from centre the div to making the ads load a ms faster I wonder if there's a bigger portion of the former seeing massive improvements over the latter. Well documented, numerous examples it's fast and mostly produces a good enough replication even if it tends to add way too many superfluous lines. Once you start getting away from the stuff on stack overflow then it's an utter shambles in my experience. Even today it'll fake libraries, namespaces, api calls. When you factor in it's much slower to understand someone else's work and check it than it is to write your own I'm struggling to see how the improvements they claim exist. At least anything more impressive than prebuilt snippets that so many IDEs have already.