Dune is for blockchain data, so I think it's good to only display that (plebbit token and crypto domains), at least for now. However, it's technically possible to show non-blockchain data on Dune by using a public API like https://api.plebbit.online/. I'll consider doing that if more people ask for it, but I'm pretty sure 99.9% of Dune users would be confused, they would wonder which blockchain plebbit is on.