To put my views into this perspective. Am I glad that Snowden and others leaked information on government programs? Yes.
That said, I think it's amusing when people need to call out "Under president <whomever>'s administration..." as if it makes a point by itself and implies something directly about the president that was named. Let's not pretend here, that's exactly what you were doing. Using this same logic, I hope you blame George W. Bush's administration entirely for the 2008 recession. I want to be clear, I'm not pretending that the sitting president's policy decisions and other influences don't have an effect. But inherited legacy, context, and the surrounding details play a huge role in how these things play out.
First, the people you are talking about (Thomas Drake, Shamai Leibowitz, Chelsea Manning, Donald Sachtleben, Stephen Kim, Jeffrey Sterling, John Kiriakou, Edward Snowden) all have different circumstances surrounding their cases.
Second, they all stepped forward roughly around 2009 and later. Most gathered the information they leaked between 2000 and 2008 working on programs for the CIA and NSA. They all leaked information that wasn't supposed to be leaked. The default in our government is to handle that with punitive measures. If they had stepped forward during any other presidency would the outcome have been the same? Yes.
Third, alluding to some sort of hypocrisy with regards to transparency when talking about intelligence programs initiated by the CIA, FBI, NSA, etc is ironic. Just because an administration wanted to embrace transparency doesn't mean it's fine to free-for-all leak information from those agencies.