I read some other stuff from Congo that proved to be correct. It wasn't really major, but he called it on Elosha visiting Roslin in a vision long before it happened and other spoilers broke, and some other things. As to whether he's full of shit now....could be. However, I suspect this really isn't the final "Earth" just like he says. Little things the writers are now quoted as saying point to that being true. His info was never as extensive as Morpheus' info was, but what he's predicted has usually been on the mark--at least what I saw of it. I don't hang around skiffy boards every day.
Take him with a grain of salt, but I suspect he's right.