I agree! Some people look for things to bitch about. I've used my rear wiper when it's raining so hard I can't see what's behind me....
I use the same microfiber towels on my windshield that I use when wiping my car down after a wash and application of ceramic liquid wax. This leaves a bit of coating on the glass that acts like Rain-X. I barely even need to use the wipers unless it's misty or I'm driving really slow. Double benefit!
Funny, I'm exactly opposite: I've seen two Primes "in the wild" but none whatsoever (Prime or not) on the dealer's lot when I went to put down my $500...