> But despite that caveat, there do exist frameworks out there today that speed up development for some developers.

Of course. But there also exist frameworks that will slow development down. For any X in {frameworks, languages, operating systems, libraries} there exist X's that will be helpful and X's that will not, and so "use an X" by itself is not helpful advice for any X. You have to use a good X, but that isn't helpful either because it just begs the question.