Is there a rule coined yet about headlines that have 'No one knows why' in the title. Like the Betteridge's law: "Any headline that ends in a question mark can

Is there a rule coined yet about headlines that have 'No one knows why' in the title. Like the Betteridge's law: "Any headline that ends in a question mark can be answered by the word no." In some cases its true, others its used kinda weakly like we don't know for sure, but there are plausible theories, and in other cases its full wrong, like we do know, its just that the journalist just asked their uber driver on the way home from the bar and they didn't know so research complete go with the headline.