Ideally yes, but console games generally dont have those kinds of performance features. I dont really think its right to pull one console only release and criticize necause you cant turn off a minimally effecting feature. I just see it as part of their vision for the visual style.One, it hurts to look at.
Two, because the implementation is horrible.
Three, because it should be a choice to turn off whatever visual effect you want.
I think if we started thinking about games as the designer's artistic vision, we might want to change it less and see it for what it is. Doesnt mean we cant say its a good or bad feature, but its what they wanted and they havent changed it since release despite a vocal group of people complaining about it. It doesnt look like DS3 has it so they wont be using it again.