Been using Pledge to do detail cleaning of my bikes between washes since 1978. It truly was the first detailing spray.
Windshield, chrome, paint. Won't hurt a thing. I use Lucas detail spray on the paint and chrome now, but I still use Pledge on the windshield. It makes it easier to clean or wipe down the next time.
As far as riding in the rain, no big deal. After the rain stops, the bike gets a blow dry at 65 to 70 mph.
Thank you. My dad has used it my whole life on everything from Nortons to BMWs, he's never scratched one either.
As far as rain, I would ride my cruisers or dual sports in the rain but supersports get a bit to squirrely for my liking.