Why? Because they gained enough clout to close a government contract? If anything, trust should go up.
Sure, they also do good / important work. And it's hard to say if they're still as bad as they used to be, as it'll take decades before the most important details about what they're doing now gets declassified. But their history doesn't exactly give a lot of confidence.
I am sure that CIA and SIS officers must get annoyed some times as how the FBI and SS (MI5) are normally the heroes and the CIA /SIS are the bad guys.