Where are you getting this info from? Pledge has always maintained it is a cleaner not a wax thus no wax build up.I use pledge on the windshield. It's base ingredient (carnuba wax) won't hurt the paint for the tins, but I don't know if there is anything else in there that will hurt the paint. Using pledge on the windshield helps clean the bugs off later.
I use Turtle Wax chrome cleaner on the chrome parts. I also have some Meguiars (0r is it Armorall) spray wax, but also purchased a liquid product recently that seems to do a nice job. I'm not where I can look up the name right now. I was told that it has properties to suspend the dirt in it, so it takes it off as it shines. I don't know how true that is, because I still wash my bike before shining it.
Hmm....I've never, ever ridden in the rain where there wasn't a bunch of dirt on the bike. Always gotta get in and clean it out. Maybe the roads in OR are just cleaner.Little need for bike washing here - just ride at the highway speed limit in the rain in this part of Oregon and the rain will blast the bad stuff off. Then use a leaf blower to dry the bike. Only a little touching up needed!