For Authors:
As a quick promo creator to make social media posts when they launch a new book or run a sale.
As their mini landing page — one clean link that shows their latest book with a nice video background and audio.

For Artists
As a fast way to promote new pieces without designing anything themselves.
As a digital showroom — each generated post becomes a clean, professional display for their artwork that they can share anywhere.

For Crafters/Makers
As a simple marketing tool to promote their handmade products on social media or in their stories.
As a portable online booth — they can send people one link that shows their craft beautifully with their story.

The Hub Page basically becomes a directory where people can browse different creators. It turns your site into both a tool and a platform.