is) that using silicon is not a good idea to seal vehicles as it somehowcontributes to rust. Don't know if that would apply to windshields
Silicone (note 'e') RTV is not good to put in contact with metal because it is acidic. For the rubber-to-glass interface it's fine, but for the rubber-to-metal side of the seal it could be problematic. I think there are some non-acidic RTV's out there. If so they'd be different. -- Jim
