Surveillance was already happening at scale and being put to use for whatever nefarious purpose. As long as it wasn't public, very few people cared. Now that the data is used for public good (helping determine health policy), media and activists jump on the bandwagon because, duh, "government surveillance = bad" knee-jerk.
Public servants putting high-tech tools to work to get people their tax money's worth? It's actually the _only_ ethical use for this collected data!