I'm pretty sure you can't put him with David Icke. For one thing, Fritz does not talk about reptilians. And another, Fritz was put in prison for what he wrote.
Are you sure he was in prison for what he wrote??
This stuff is both pretty tame and, at times, wildly inaccurate. Edward Griffin, author of "The Creature from Jekyll Island" writes far more explosive (and far more accurate) stuff than Fritz, and I don't think he's been thrown in the slammer yet..