The problem is that blinding for sender and receiver is hard to achieve on a route-based mesh. On the internet you need to know the receiver and sender of a me

The problem is that blinding for sender and receiver is hard to achieve on a route-based mesh. On the internet you need to know the receiver and sender of a message, otherwise you have no idea where it's going and the best method to from there is to use very inefficient methods. HTTPS and IMAP over TLS already achieve MITM-resistance, as long as you verify the certificate. With TLS (and SSL to some extend) you can't snoop on and censor data, not without compromising the sender (assuming you trust their certificate explicitly).