I think you are confusing the current social/political issue (overreaching surveillance) with the mere fact that surveillance technology exists (a neutral thing, in and out of itself). This would be like speaking out against police in general, because police can be corrupt. It is understandable, but not realistic; we still want those robberies, murders and break-ins solved.
Overreaching surveillance has been an open secret since ECHELON was revealed. The idea of mass surveillance tech existing without being abused is great, theoretically, but may not work in practice. Yes, we want intelligence organizations to do their jobs ethnically, but there is currently no reason for them to do so. Therefore, until there is a reason for these organizations to behave, it is entirely rational to do everything possible to lessen their currently excessive power.