TheCosmicKid
Hero
You didn't actually answer my question, though.As a DM, I would look at the rules in the book and conclude that it's a silly mechanic, given that it encourages the playing of delusional characters. I'm not going to fault the players for the fact that the game mechanics encourage this behavior.
Okay. Since this is a house rule, on a house rule forum, it might be pertinent to provide some specific suggestion for how you would make it work in a less disruptive manner.If I didn't want that sort of thing to happen in my game, I would just ban the class, or figure out some house rule to make it work in a less disruptive manner.