In other words Snowden's taught millions of young people he influences that working within the frameworks of politics and the law is pointless and can't create the lasting change they hope for.
This is not only incredibly childish and destructive - it's inaccurate. Politics and the rule of law have have provided protections for racial, sexual, religious minority populations in dozens of countries around the globe, have destroyed institutional slavery, and have created the largest sustained creation of broad-based wealth in human history. It's provided universal health care for millions of people across Europe and the Americas, defeated totalitarianism in two global conflicts, launched people into space, and created the technological revolution without which we wouldn't be having this debate today.
We're not perfect. Nobody claims we are. But politics and law are how we improve ourselves.