Great post.  100% correct.  I would throw in something about replicable results so it can't just be the work of one evil entity but you are missing the point.

Everyone else here (and most people in the world) get this.  Bobo has all this information.  He just chooses to reject it.  Explaining it to him again is a waste of time.

Exposing him to reality isn't going to wake him up, it is just going to send him farther back into his cave.

Personally, I think the best approach is to humor him to his face and analyze him behind his back.

That are only "talk" to him when he seems sober.