Features-wise, Guilded has all of the same features that discord has (and maybe slightly more).

https://www.guilded.gg/

Great… The best use case for this will be transferring keys in an ultra secure manner. Otherwise the connection is just way fragile to handle any useful amounts of data.

A physicist (Sabine Hossenfelder) gave some useful information about what quantum internet is, vs what it is not:

https://www.youtube.com/watch?v=u-j8nGvYMA8