Necessarily, if the pressure on the blade were greater, wiper lift would not occur. An aerodynamic blade minimally compensates the effects of wind lift but does not correct the lack of pressure on the wiper. Contributes to your driving safety and comfort. When driving a vehicle, you must see where you're going and what the driver ahead will do. Bad visibility due to a poor performance of the wiper system makes driving risky and unpleasant.
Good visibility is essential at all times.
Safe for wiper motor and blade. The washer fluid, rain or snow on the windshield act as a lubricant for the wipers. In extremely DRY conditions there is a slight difference in wiper motor effort. The difference isn' t critical. Prolongs wiper blade life and makes it perform better, longer.