Not sure of this connection between Edward Snowden and conspiracy came from... I don't see how their linked. I don't think most people associated what Snowden revealed was conspiracy nor what was happening didn't happened.
ethically was the issue... never about the legality. The legality was there... there were rules by the U.S. Supreme court and Congress and they were not abused legally at stated but yes, people questioned the ethics... as they should and are entitled too. Not much different how some Americans questioned the ethics and legality of drone strikes on American terrorists in foreign lands. The legality was solved... the ethics like what Snowden revealed... will NEVER be solved.
So let me get this straight though... people should not write off those who claim that 96% of everything you know is either false or lie... because of Snowden??? Are you on-board with the theory that 96% of everything you know in your life is a lie?