In the spirit of dispelling ignorance, not spreading it, let me show you why the claim “[water vapor is a feedback loop, not a driver](water vapor is a feedback loop, not a driver)” is a made up and false statement. Of course to be fair it might be the exact phrasing, so let’s look at “water vapor is a feedback loop”, which is the really wrong part of the claim.
Note that the first two sites below the No results found for “water vapor is a feedback loop” message are skepticalscience, which is to be expected, as it is a main source of so much bad science.