Does it make any sense to try to prosecute climate skeptics by referring to RICO? The answer is obviously No. They are not racketeering, they are not influenced, they are not corrupt, and they are not even an organization in any sense. However, someone else could be tried as a violator of the RICO act.
Just think about it: Which people are grouped in organizations that corrupt others? Which group of people has received over $50 billions for having done nothing useful because this group has been connected?