No it's not. You're conflating "it was terminated" with "it was designed with termination in mind". It's a fact that it was terminated, true, but this doesn't necessarily mean that it was designed with termination in mind. For all we know, it may have been designed with every intention of continuing IRC/XMPP support until yesterday when an executive decision suddenly said otherwise. Now, I don't believe that, but that doesn't matter: the fact that it was terminated is not the fact that it was designed with termination in mind.