I think it's very clever. Even if I think that the sarcasm of the paper express the message perfectly, after reading some of the comments here, I'm going to spell it.

It's telling us: we live in a material universe, intelligence is just a function of physical attributes. If you want to deny the possibility of machine intelligence, the burden of proof is on you because, denying that would be so ridiculous as denying supersized machines.

Pointing out someone's mistake and not taking the opportunity to belittle them; Good ol' HN