A little bit of clickbait is what you need to get interest at all. That's just a fact of life. As for this specific claim, it was coupled with a blog post that

A little bit of clickbait is what you need to get interest at all. That's just a fact of life. As for this specific claim, it was coupled with a blog post that actually demonstrated the speedup on a specific problem. Getting several orders of magnitude speedup over plain python is often quite easy. That's why we have numpy and pandas after all!