Does it matter why they did it? What matters is what was done was exposed.
Of course it bloody matters because you've got an unelected arm of government running the show for its own purpose.
You think Nixon is the only guy to misuse the office?
You ever notice how silent the intelligence services are when it comes to war the US starts?
Actually look into the Nixon presidency. He was more of a 'Democrat' than anyone has been since JFK.