I argued that centralization of power can develop within the Core development team
Centralization of power can not develop in the Core development team, exactly because of this ability to hard fork away from the Core development team. It is this mechanism that ensures this aspect of Bitcoins freedom. Which is why intrinsically at least it is not wrong to hard fork away from the Core development team.
on the bolded: oh. lol. glad we cleared that up.

now if only Peter R could understand that, and stop spamming his pie charts in the face of reason.
the only context in which this "mechanism" need be mentioned at all is if bitcoin were closed source. that is an impossibility at this point.
no one said it was wrong to hard fork (that is very different from criticizing the merits of a particular hard fork). opponents of XT have been telling you guys to fork off for months now. that doesn't mean that when you keep on arguing for XT based on misinformation and fallacy, that we won't explain reality to you (and those who read these threads).