That's because the elderly suffered much more stringent brainwashing as children that leads them to say that they "support those who fight for our freedom" while also promoting a police state worse than Orwells worst nightmare. The younger crowd grew up with much more access to information and see the police state for what it is and do not have the blind worship of government that the elderly do.
What a crock. Ever since myspace came along, every millennial I know has been quick to jump on the next big tracking/social app that comes along. Many older but not "elderly" people won't do that precisely because they are concerned about being tracked. Aside from that, what Snowden did can't be simplified into right or wrong because some people object to the way he did it, e.g. running off to Russia instead of standing on his principles and others object to parts of what he did, such as releasing documents that could get innocent people killed. Nothing can be derived about how people feel about a police state based on their opinion of Snowden. A better measure would be the fact damn few people are protesting or doing anything else to try to stop it. In this regard, it is everyone's job; However, mass social protest has always worked best when young, college age people are involved as it was during the years of Vietnam. In that regard, they seem entirely missing from the scene.