Well, logic would dictate that the characteristics of this knob, in order to allow better maneuverability, are guided by the following three criteria:
1) narrow profile;
2) knurled profile;
3) height equal to the size of the last phalanx of the thumb and of the index.
Well, the knob not only does not imply any of these three characteristics but, paradoxically, presents all characteristics (large, smooth, low) exactly and diametrically opposed to those required by the logic.
And I think that to design industrially this bullshit was commissioned and paid an "Engineer"...