My version, off-the-cuff:

""" Making a demo that does some things is easy. Making a demo that does all the things is hard.

We took a lot of time to make this product polished. We nailed down a lot of UX gotchas and a lot of bugs that come from poorly written back-end code.

If you don't need the polish, then a demo is more than sufficient. We built this for those who just want to ship, not fight with their agent about tech stack stuff. """