No one “needs” to do anything. Some of us like to tinker and learn different things in the process. I have a range of drones that are standard, some racers, and I have 2 mavics. One is standard and one has tweaked settings to see what it is capable of.
No one suggesting you need do this or that this is nessesary. Some people are happy with what comes out of the box. Some people like to move outside the box.
So my return question to you is, why wouldn’t you need a drone to fly that fast? But then the answer is, it’s not my concern what you do as long as you are safe and not bringing us into disrepute