How about the possibility that these scientists would rather believe such a conspiracy does not exist? After all, we have a lot of people ignoring the severity

How about the possibility that these scientists would rather believe such a conspiracy does not exist? After all, we have a lot of people ignoring the severity of global warming for the very reason that it's heavy burden to bear to live with one's eyes opened to the true extent of reality. Scientists are not necessarily self-aware, even though that is our ideal or definition of a true scientist.