Why should I not pour boiling water on coffee ?

I've heard, I should not pour boiling water over the coffee. Why is it not recommended to do so ?

Some people recommend to not use the boiling water straight from the kettle when making a coffee. The high temperature of the water can scald the coffee, what will make your drink taste a bit bitter and burnt. To pour the coffee, you should use the water with temperature between 90°C and 96°C / 195°F and 205°F.

So to pour the coffee, it is recommended to use the water before boiling or to cool down the boiling water for a couple of seconds.