...Snow Leopard?
The problem with your response is that I don't know that anyone has ever actually provided reliable evidence that the number of complaints has gone up. GP's view, which I share, is that people always complain about new releases, forgetting that the previous release had its problems as well. As GP said, bad headlines are easier to make than good ones. Simply reiterating that you think the previous release had fewer problems, and that there are anecdotes out there about problems in the current release, is hardly a refutation of this. This is entirely consistent with GP's view.
I for one have experienced no significant change in reliability on the road from Snow Leopard to Yosemite (for what that's worth).