You're really cherry picking from that post by Rosenfeld. Here is a more complete quote of his post (with portions that you probably don't agree with bolded):
Given that compromise failed, Gavin and Mike went ahead to push Bitcoin-XT, and now the real issue isn't about technology, it's about the philosophy of Bitcoin evolution. To me, Bitcoin-XT represents a somewhat reckless approach, which in the name of advancement shatters existing structures, fragments the community, and spins the ecosystem into chaos.
Whereas Bitcoin Core represents a frigid approach, where no technology improvement will ever be made because consensus can't be reached, and where we can't do anything about the fact that we can't do anything, because of the delegitimization of attempts to change the status quo by forking and letting the best currency win (and make no mistakes, there will be many necessary technology improvements down the road; the block size limit pales in comparison).
Both choices are bad.I had plans once to write a paper about the game-theoretic aspects of changing the Bitcoin protocol, the contingencies in case of a fork, and how the mere threat of a fork can create a Schelling point which would prevent it from happening. I regret never getting around to it, because it might have been illuminating in the current debate. (For that matter, the other paper I had plans for writing was about transaction fees and how they relate to things like a block size limit; I regret that too, but again the block size is no longer the real issue).
But anyway, I do strongly believe that the possibility of forking Bitcoin - even if at first it has no consensus - is vital to Bitcoin's health, growth and survival. It's the glue that holds everything together and makes sure the Bitcoin economy has a say in case something goes wrong with the development. Ideally a contentious fork would forever remain a theoretical possibility - but if it is possible it means it can happen, and that's what we're seeing right now.
Rejecting a fork on the grounds that it's a fork is wrong.Of course, there are reasons to reject Bitcoin-XT on the grounds that its timing and method are wrong. The objection to the technical change was too strong to just gloss over it. We're definitely not anywhere near the point where Pieter, Greg or Wladimir can be conceivably considered rogue and we should break away from them. Mike and Gavin have, quite arrogantly I would say, assumed that this is just like any other software change and that virtually everyone will just automatically follow them, where the reality is far from it. They didn't properly consider the consequences of making this move without enough support. (They might reply that they have been fighting for this for a long time and exhausted all other options, but I don't accept this - they made many attempts at persuasion, but not enough at compromise).
So here we are, having to choose between two bad alternatives. The mere act of choosing commits, in my opinion, the logical fallacy of privileging the hypothesis. There are millions of possible approaches, and "someone" out there restricted them to just 2. Most of the decision process (culling from millions to 2) was made for me and I'm left rubber-stamping one of the choices that remain. (See also
http://lesswrong.com/lw/mi/stop_voting_for_nincompoops/).
But hey, even a noisy bit contains some information, and the question was asked, so...
Given the choice between short-term sticking with 1MB or going all the way to 8MB, I am in favor of going to 8MB.
Given the choice between sticking with Bitcoin Core or switching to Bitcoin-XT, I am in slight favor of sticking with Bitcoin Core, but that could change any time.
You make it out like he is gung-ho "team core", as you like to put it, but at the end he says he is only "in slight favor" of core over xt and that his preference could change at any time.