I think this is a great idea and a beautiful execution on the landing page.

My feedback would be to show a lot more of the communities that you have, pre-sign up. There are a lot of people already hanging around in Discords or forums, and to try your product they'll need to see there's a potential upside.

So, letting me browse without being logged in what communities and how many people interacting in it would be a better way to entice people to sign up.

Good luck!