The US government is full of secrets. Some of those secrets make sense, becasue they can help stop panics or keep information from getting into the hands of our "enemies". Other secrets, like this one, could harm more peopel than they are intended to help. That is why we need a president that knows which secrets to keep.
the main point is that you simply cannot make an absolute statement that something is so bad that it has to be ruled out with no consideration for the costs or risks of the alternatives. Everything has a risk, and if we intentionally blind ourselves to one alternative because we perceive it to be too risky, then we can never be sure we are making the optimum risk-mitigation decision.
Every government harbors secrets of some kind. That's not to say that conspiracy theories have much relevance, but there are many secrets that are kept to protect its citizens and national security. Many times these secrets are to ensure a mission's success or to let our enemies know of our actions. I'm positive the U.S. has just as many secrets as Russia.
No, the U.S. government is not as secretive as Russia's. The U.S. government does not control the media. While it does try to cover up some tragedies, it ultimately releases the information to the public. Sometimes it is helpful to keep certain information away from people in order to clean up the mess before the public learns of it.