Before I get on the subject of InfraGard, let me explain that I enjoy all conspiracy theories for the entertainment value if nothing else. The amount of work put into many of them is like a never ending lie. As soon as they're debunked, they come up with another twist to make their unproven theory true. It's almost as entertaining as listening to a global warming scientist, but better.
I also realize the danger that they can pose to those that follow blindly, but everything has a downside.