"The blend of multiple protocols into one unit is the problem. It make it too ripe a target for exploitation."
But they ARE one unit ... or rather they all run over that one unit. It's called TCP/IP. That is the beauty of how the connectivity of "TheInternet[tm]" (whatever that is!) works ... TCP/IP is cross-platform, and cross-protocol.
"Try joining Freenode using Telnet and you'll see how simple the process is."
Uh ... John, telnet is a different protocol to IRC.
telnet, ostensibly port 23, is a machine connection protocol. See RFC 854, née RFC 15.
IRC, originally port 194, now usually found around port 6667, is a human (ASCII text) communications protocol. See RFC 1459 (and/or RFC 2810 et alia, for you new-agers).
Do you see where you are missing the point, and where the so-called "security expert" is missing the boat? This shit is all interconnected BY DESIGN. It was never designed with security in mind, and indeed, was designed to seamlessly link everything, allowing anyone, anywhere, to share information about everything, WITHOUT blocking information about that information.
The Internet is a research platform gone mad. It is NOT secure, and never will be, at least not in it's current incarnation. Those are the facts. Deal with it.