"Countersignaling" (https://en.wikipedia.org/wiki/Countersignaling) might be the better word: "Countersignaling is the behavior in which agents with the highest level of a given property invest less into proving it than individuals with a medium level of the same property."
This is a great one to put in my vocabulary. It also ties into the "vocal minority" thing where people that aren't actually the best people to talk about an issue are the most visible.