Admittedly, you could post this comment on nearly any physics topic.

I see he's still as obnoxious like always. He makes points, though I'm not qualified to say whether they are valid. I wish he could be more restrained.

That said, if someone like David Deutsch publishes such theories with grand predictions, they deserve criticism.

I scanned the paper and I feel like most of the criticism by Motl is more or less justified. They introduce non-standard notation for things that would probably benefit from a treatment within well established mathematical language. For example their discussion of non clonability of "superinformation", whatever that is, could probably be resolved by working within a non-cartesian monoidal category (which is a standard tool in Quantum logic).

"it isn't easy to ignore Lubos, but it is always worth it" if he could just be a little more on the topic, instead of insulting everyone, his legitimate critiscm would a far greater value.