Beating disinformation

Sefton Delmer's propaganda messages to Germany induced Germans to doubt the validity of Hitler's propaganda. Ukrainians have learned from them.

I wonder if there is a chance of applying these methods to the delusion of trumpet propaganda. Delmer had more than a clever idea: he had the resources of the British government available to carry out the idea. There are surely Americans who could try to do something like that -- but what institution would give them a voice loud enough to be noticed?