"... Prism is further proof that the agency is collecting vast amounts of e-mails and other messages — including communications to, from and between Americans."
??? PRISM was the one thing I stopped being worried about as soon as I figured out what it was. The government has always been able to subpoena a third-party for records pursuant to an actual investigation, and even Google seemed to be satisfied with the idea that specific PRISM requests have been legal (even if they forced NSA to get a real warrant first).
Other things may indicate NSA is hoovering emails like a Mob boss hoovering blow but PRISM isn't one of them. PRISM has to be turned on to acquire data, unlike other NSA SIGINT this one's not actually magic.
I'm kind of disappointed by the opinion piece because if they only took efforts to be factual they would probably be able to make a much more persuasive case (e.g. by bringing up Carnivore or 641A-style data interception instead of a system that queries specific individual users one-at-a-time).