This is not a super fun repair. It requires the removal of the bonnet (hood) and the cowling. But every time it rained this year and it was A LOT OF RAIN I watched my wipers go across the wind screen and wondered if the mechanism would hold out until I got home.
You can see from this picture that the support shaft is completely gone. Those are chunks of metal that represented what was once the support shaft carrying the shaft that the wiper arm is connected to.