This warning is not premature.
He hits many of the main points - information trawling, fishing expeditions, loss of privacy and the rendering of every individual as a potential suspect.
Each time we revisit this issue I always wonder...are the Government being obtuse? Are they imbeciles unable to comprehend the loss of liberty? Do they just not care and see it purely in the dimension of their own convenience and revenue potential? Is it out of unbridled desire to manage and control?
Regardless, all those motivations and scenarios are wrong and the apparatus could be used for all manner of ills, if they are not being used already.