Certainly there are always some employees who will use whatever processes are available to game the system, or to game their employment, or to get revenge on other people where things have gone wrong. That's no different for whistle-blowing than for any other grievance process or dispute process. It should be no surprise that people will try to use these processes for a range of purposes for which they weren't intended. That certainly happens. The key thing is the capacity of agencies to minimize that and to make the rules such that it's minimized. It's a very small problem from everything we can tell, including the opinions of managers in organizations about their own procedures.
On March 20th, 2017. See this statement in context.