Kalessin, I agree with your points, but there’s not a lot of server heavy-lifting to do with a chat client. The data being stored is textual – and even if files were being swapped, they could simply be stored as blobs. Nothing that a barebones WordPress-capable server couldn’t handle.
The server that this plugin references isn’t even active; ergo, the plugin doesn’t work.
I still believe that this plugin should be removed.