"Standard option" is an oxymoron. If a feature is standard, it isn't an option; if it's an option, it isn't standard. I know what you meant, though, and no, I wouldn't pay more for a folding windshield.
Oxymorons are normal with Jeep...When I ordered my Rubi it was 'required' that I select the 'optional' safety group, LED lighting and proximity keyless entry. These were not standard, were clearly labeled as extra-cost options, but at the time FCA would not accept new orders without them...Hence they became 'standard options' during that time period!