I would agree those were cherry picked so how about we look at a few of the major trends:
Trust of politicians and government in general:
Income disparity (who is getting all the new wealth):
I don't have a particular link to environmtal damage but if you can't see that in just about every news source (even the terrible US ones) then you are working hard not to see it.
I will say that not everything is gloom and doom butpeople commenting on corruption, corporate greed and increase in power seems to me just being perceptive not overly negative. Most statistics I've seen and real world experience for the average person seem to support this. I would also point out there is strong evidence that government control is increasing and "rule of law" is decreasing. Again I don't have specific metrics for these but I certainly can point to several pieces of legislation as well as personal experience dealing with governmental institutions (border crossings, airports, traffic stops, tax assessment, building departments). Apparently you do not see this trend but the large number of comments about this just might be from people who see these trends or have experienced them first hand.
Finally, the impetus behind pointing this out just might be a desire to fix some of these issues. The first step in fixing a problem is to identify the problem. Refusing to acknowledge real problems does no service to people facing them or to resolving the problem itself. Just a few things you might want to consider. Hope this helps,