Why is it crazy? Because, according to your worldview, the otherworlds and their denizens are not to be taken seriously? Your judgements reflect yourself.
World views absolutely can be criticized because some can be very destructive. Just like you criticizing the capitalism or animal rights which is reflection of your own self.
Please stop with this mentality of being victims.
Just because you're tired of the "crazy" and "delusional" criticism doesn't mean it wasn't "crazy" or "delusional." Your feelings have little to do with the reality of what is being criticized.
I'll side with you that the OP could have been structured differently but the point that some of these beliefs falling into the crazy and delusional categories, I feel is justified.
My wife and her entire family are scared of ghosts because Vietnamese generally scare their kids with ghost stories to get them to "obey." Luckily, my parents never did the same with me. In a recent vacation, two of her families members would not sleep in a bed because the frame was made out of wood. Just something to do with a ghost story. Instead they slept on the ground in the living room. I stress to my wife to never scare our kids about ghosts and monsters because she is a prime example of the power of the mind. She's knows rationally that I'm right but she still considers that ghosts can actually exists. I reinforce it again and again, if she's seen one and if we've proven anything about ghosts. Obviously, the answers are there. Reality is, she and her family have built irrational fears out of a belief. It is irrational. It is delusional. It could also be considered crazy given the extent. These are the proper definitions being applied.
If I don't say anything or criticize her and her family, then her fears could become worst or my kids could have adopted these same irrational beliefs.