That is of course a good point. But..
It took years and years and citizens who were willing to suffer the verbal abuse and ridicule of both fellow citizens and their government to get the facts (most of them anyway) about Ruby Ridge and Waco.
The Congressional hearings probably saved the lives of countless American citizens as the Congress, actually doing its job, reminded federal authorities that their role is law enforcement not breaking things and killing people.
To be fair, and going by what G Gordon Liddy said (as best I can remember), the renegade federal authorities were mostly in organizations that were dumping grounds for employees who were unwanted by the parent agency.
No, we cannot just wait. We have to demand facts. There are still far too many heavily-armed misfit psychos ready to act out war movies on their fellow citizens if the past is any indication. IMO.