Perhaps some remainers (myself included) are being far more dour than we need to be, but in the short-term it's somewhat justified until we actually know the new direction the country -- and the world -- is heading as a result of this vote. On the other hand, dismissing the recent fallout seems similar to standing inside a burning house and ignoring the fire. Possibly it will burn itself out soon. But sitting there saying, "This is totally fine" is, perhaps, not the best response either.
All of the mess of the last fortnight may be an overreaction and maybe in as little as five years we'll wonder what the fuss was about. I would, believe it or not, like to think that. But we don't know. Until we do, it's totally reasonable to be at least a little apprehensive.
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Returning to the question thread, the "chaos" in the Tory party seems to me to be more about how grubby politics can be. I don't think we should be celebrating returning power to Westminster if it becomes just about personal power-grabbing. In that sense, I really hope Gove loses and gets smashed in the process. It would send a message that doing politics in such a way no longer works, and I'm fairly sure we could do with that.