Took a huge rock from a Semi on the interstate in my windshield right in my line of sight, had it replaced by City Auto Glass with the proper date codes etc. and they didnt have to remove anything. Nothing should be in the way of a pro to replace the glass. The wipers are close to the bottom edge of the rubber edging of the glass but not in the way at all. The cowl shouldnt have to come off either.
How are you replacing a windshield without removing the lower moldings or the wipers? Even if you slid the moldings out of the retaining clips, which is wrong, the clips are in the way of the knife. So the cowl panel has to come off. I've done more than a few. But for what my glass shop charges it's not worth it anymore. Besides restos they have done hundreds of collision glass jobs for us in the past 20 years.