Man walks into a psychiatrist office. He tells the doctor he speaks in an unknown dialect to a “god”. Is this person committed to an insane asylum? psychiatric institution? Why or why not??
Considering insane asylums don't exist anymore that would be a no. But yes, they should probably be prescribed a mandatory stay at a psychiatric facility.
In the US, unless he's a real direct threat to themselves or someone else's safety, they would not be detained. People are allowed to be insane as long as they aren't imminently a real direct threat to anyone's safety.
What if they’re running around nude? Or screaming threatening profanities or making offensive gestures? Many other symptoms could accompany psychotic dillusions which would lead to being involuntarily committed