Maybe use it to teach people what Nostr is and how it works so they can understand it?

It's quite complicated if you don't get into its guts or have technical knowledge, no matter how simple the protocol is.

I mean, in the summary of the protocol it is very clear what it is and how it works, but after a certain point the average person is not going to differentiate it from another social network. I would use that website for exactly that, to help people really understand what nostr is in a language they understand.