The facts present themselves otherwise
And the TSA claims that they're effective. What of it? I don't really care what the government claims at this point.
Trustworthy or not is basically irrelevant in a discussion about whether the NSA provides any benefit.
I said that the NSA needs to be abolished because they are not trustworthy. I don't care about any mythical benefits; I don't care if they exist and I don't care to even discuss it. If you want another spy agency, come to me when you've found a way to create one that won't abuse its power; I won't hold my breath.
Disbanding the NSA while allowing the existence of foreign spy agencies means they're cooperating against you without you.
They're already cooperating without me (I do not consider the NSA to be my ally), and the NSA just makes things easier for them, anyway.