What does it mean that a mentally afflicted person, when speaking, speaks without order, and does this apply to someone suffering from obsessive-compulsive disorder (waswas) regarding pronouncements of divorce?

It is stated in Hanafi books that the divorce of the person afflicted with obsessive-compulsive disorder (waswas) is not valid if he is mentally affected, such that he mixes and confuses his speech, and his divorce is not effective due to the overwhelming control of obsessions over his mind.