As for the results of the CSU climate research, they're not in any doubt. Every criticism of them has been answered, and there are other studies that agree with the CSU results. So attack the scientists for being human if you must, but the science is sound and must be heeded.
But science is hard to understand, and human weakness and temptation is something everyone understands all too easily. So, the fact that the science is right is lost beneath the crowing of the right-wing bloggers, and the truth gets lost beneath the "truthiness".
The media has told us that popularity is truth, and so as more people who take the easy "global warming is a conspiracy" line, that is treated as if it invalidates the science. Media coverage of science is almost uniformly terrible, and no-one has the slightest, because scare stories and conspiracies are easy to package than nuance and subtlety. Fortunately, scientists have rarely needed popular acclaim, and have never received it, so nothing will really change.