I have no idea how these folks expect to avoid being caught. I suspect they know there will be no consequences. The truth sure won’t do them any good.
In 1950, everyone knew about the massive warming in the Arctic
Even NASA/NOAA knew about it until a few years ago, when they decided to erase it.
In order to get rid of the 1940’s blip, NASA/NOAA cooled temperatures by more than 2C