This, I've known people who got knocks on their door by the FBI and SS for posting dumb shit they weren't serious about as a "joke." They take that shit seriously I guess only when its lone wolves that can't do as much damage and not people rich enough to fund a small army.
I'll add to the absurdity for you: The agent asked me, "does this sound familiar?" and recited my forum signature which was a short poem about a sailing goat