You misread what I wrote. I did not, in fact, write that individual scientists (or even research groups) don't fabricate research. I wrote that, quoting what you just quoted, "There is no incentive at all for thousands of scientists to be part of some kind of insane global conspiracy that misleads everybody else". Science is a self-correcting endeavor; as you yourself have pointed out, scientists actually investigate stuff like fabricated research themselves. One of the goals of every scientist is to prove another scientist wrong, especially if it's about something that is widely accepted as true.
And yes, a lot of the research into the climate was eventually shown to be wrong, or not precise enough, and a lot of the data we have now will eventually be shown to be imprecise, or even wrong. In fact, that's the whole point: if people wouldn't find flaws in the existing data, they could just stop researching it and call it a day. "Hey, we know everything there is to know about the climate, let's go home and watch some Futurama!"
The fact that there is still a ton of research in this area is because we don't have all the answers, and a lot of the stuff we have is imprecise or possibly wrong. That's science. Today, we know more than we knew yesterday (and no, that doesn't mean that yesterday's predictions are useless, just not as precise as they could have been).
I believe your issue is that you believe scientists you support do not lie.
Again, you don't understand how science works. You don't "support" a bunch of scientists and then believe everything they say (well, you apparently do, but it's not what you're supposed to do).