I'm not talking final fantasy here, Im talking Witcher fantasy.
Need I remind you that Geralt uses the Witcher's fighting style and not medieval fighting style. Witcher's fighting style is developed for mutants who are much faster and stronger than humans, and it is based on fantasy more than actual medieval warfare. Medieval fighting was effective, but it was also heavy, restricting, slow, and boring. Geralt is described as being fast and dancing and pirouetting around the battlefield with a two handed sword, which is pretty unrealistic for a regular dude in a medieval battlefield
I also agree that the fighting style should be kept within a reasonable level, and overdoing it would undermine the game's seriousness. But at the same time why go for the boring and realistic medieval warfare, when you have a character such as Geralt who is capable of so much more. There has to be a balance between reality and fantasy.