Yvain's anti-reaction FAQ shows nothing of the sort. It cherry-picks a few examples. To compare the stability of democracies and monarchies, a much broader historical comparison is needed. I'm working on one now, but people should really read their history. Few of those who confidently claim monarchies are unstable have more than a smidgen of serious reading on Renaissance Europe under their belts.
I look forward to you response when it is published. As of right now, that's an assertion without data.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.