2021 Toyota Tundra VISIBILITY/WIPER

When I was driving and snow accumulating on the windshield put stress on the windshield wiper arm. The arm stopped working and I later found that the arm stripped out. I contacted three different dealerships and Toyota America and was told the wiper arm is no longer made ( part #85221-0C021 ). I told Toyota if it rains or snows I can not drive the vehicle due to laws and safety issues. I thought under the Magnuson-Moss act, a manufacture had to keep parts for items under warranty.

Vehicle is now 6 months old from original & new purchase. Within 30-days of ownership, (1) approx 1.5mm in size chip was fully repaired half way up from the front of the windshield. Eight hours ago (1) extremely small pebble, approx 2mm in size, contacted the front windshield 2 inches from lower portion centered in front of the driver and NOT in the area of the previous repair. Now, the same chip is a full length horizontal crack. Windshield material(s) seem to be extremely prone to failure and possibly not up to NHTSA or federal specifications...

Driver side wiper does not work while passenger side works. Has not been into dealer yet, due for state inspection now, June 2022. No warning, would not work when attempting to leave home.