Agree with the other comments about adding more to your landing page. There are tons of notes apps out there but yours is actually a very cool take. If it wasn't for the YouTube videos linked from this thread, I wouldn't have understood what you have built at all. I imagine any of the following would be quite helpful.
- Condense your video to < 1min and embed it on your landing page.
- Use your copy from these tweets alongside relevant screenshots: https://twitter.com/iamguico/status/1646396960360808449
I probably wouldn't use it personally since I'm happy with Obsidian and I can choose how the data is synced, but I can see how your UX could make sense for many people.