The one thing I'll agree on with Google: the patent system is flawed ― too bad this is really the only good point (or excuse, I should say) they're using to defend themselves. Then again, Gruber shouldn't be condoning the validity of software patents in the first place, because they suck.

Aside from that, I think Gruber hit the nail on the head (though his usage of undermine seemed a bit odd and out of place).