How is your criticism in any way related to the OP?
(Also: the great majority of the instances I can recall where Gruber has called something "claim chowder" have not been about an Apple competitor rejecting an idea, let alone subsequently embracing it. Top results for me on Google right now: (1) Henry Blodget saying the iPhone is dead -- not an Apple competitor; (2) someone at "Fast Company" saying Google Plus is going to have lots of users -- not an Apple competitor, not rejecting an idea; (3) someone at The Register predicting that Apple will launch a phone and it will fail within a year or two -- not an Apple competitor, not really rejecting an idea; (4) lots of people, mostly not Apple competitors, being unimpressed by the iPad in various ways; (5) BGR claiming that Apple were going to launch a new version of the Apple TV OS -- not an Apple competitor, not rejecting an idea. I'll stop there but the next few were also not Apple competitors rejecting ideas.)
(Yeah, Gruber is a zealot and not perfectly impartial between Apple and Apple's competitors. That is not news. If there's something he's actually done wrong on this occasion, let's hear it. If not, what's the point of irrelevant criticisms?)