There are Figma plugins that let you extract a static HTML website into a Figma file. Copying that over Figma Make and prompting for a while can make pretty good prototypes that need very little adjustment back in Figma.
However, I believe that being able to do something doesn’t mean you should do it. Prompting back and forth can easily introduce a lot of cognitive load on top of all sorts of other daily task.
I feel the modern human in the loop is similar to the factory processing line workflow where just almost anyone can learn how to use a tool and produce output.