Scientists have not been silent for decades now, and all they have received for their efforts is crap from 'Conservatives'. Most of the conservatives, like McCain, understood what is happening, but they no longer have any influence in the GOP which has become the Cult of Trump.
Their efforts have not produced a single piece of observed, measured evidence which supports the AGW hypothesis over natural variability...their efforts have not produced a single piece of observed, measured evidence which establishes a coherent link between the absorption of IR by a gas and warming in the atmosphere...and their efforts have not produced a single peer reviewed, published paper in which the hypothetical warming due to our production of so called greenhouse gasses has been empirically measured, quantified, and then ascribed to said so called greenhouse gasses.
In short, they have produced nothing more than a great steaming pile of pseudoscience and political quackery.