Sorry, that's not accurate. Webflow sites can be exported at a click of a button, and you own all the code. You can host anywhere you want, make any custom changes, etc.
As someone who has many years of experience coding animations by hand in css and a little js, sometimes a tool would be more useful. Its too easy to get lost in the minutiae of the code and lose sight of the visual impact you're going for.
For some people, a tool like this is entirely worth the cost.