Exactly.
Damn Mayans with his infinite Prophet Spam, making me waste my hard earned faith points to station Inquisitors in every city.
I think if anything, there should be a 3-strike rule that you gain a Casus Belli if a civ ignores another civilizations request 3 times.
There's two kinds of wars, Justified (i.e Casus Belli) and Surprise.
Surprise wars hold a much higher value of warmonger penalties, and Justified Wars have a lower value of warmonger penalties when executed. But you need a "reason" to launch a Justified War. I'm not sure what examples they gave but it could be something along the lines "You've Denounced us", and then one side gains a Justified Reason for war, and can use that to launch an attack on another civilization.