Take a look at this picture of Peter Todd, look at his T-Shirt and tell me he's being ironical. You don't wear a T-Shirt with NSA logo unless you idolize them or work for them.
From what I understand he hangs out with and talks like an anarchist. That shirt reminds me how all the hippie and druggie teens growing up in certain places of the US I visited would wear "D.A.R.E" shirts to mock the teachers , parents and authority figures. Probably what Peter is doing here.
Dude was a strange cat. But I only ever met him like 2 times.