It's quite simple, to work out if you are a national security risk - you look up the definition of national security:
national security — A collective term encompassing both national defense and foreign relations of the United States. Specifically, the condition provided by: a. a military or defense advantage over any foreign nation or group of nations; b. a favorable foreign relations position; or c. a defense posture capable of successfully resisting hostile or destructive action from within or without, overt or covert.
In 2010, Barack Obama included an all-encompassing world-view in his definition of America's national security interests as:
• The security of the United States, its citizens, and U.S. allies and partners;
• A strong, innovative, and growing U.S. economy in an open international economic system that promotes opportunity and prosperity;
• Respect for universal values at home and around the world; and
• An international order advanced by U.S. leadership that promotes peace, security, and opportunity through stronger cooperation to meet global challenges.
So based on that MrCash I wouldn't worry, you are more likely to be a danger to yourself than a "significant risk" to US national security and the intelligence services will not give you a second thought. The dystopian ramblings are entertaining though, maybe you could write a book. The phrase you have artfully and colourfully quoted above is quite clear, only the paranoid would read more into it.