Elite Dangerous ships aren't real. We have no idea what control input will be used on the craft that takes us to Mars. It's all hypothesis.
The fact that most top pilots in the game, however, choose to use a mouse and keyboard... Well, that is evidence to suggest a mouse and keyboard offers greater control.
The fact is this:
The pilots you're referring to play on PC which is their platform of choice and where 99% of games on this platform are mouse and keyboard therefore....these pilots who prefer mouse and keyboard use mouse and keyboard. This platform was designed with the thought that gamers will use mouse and keyboard so from a development point, more care was put into those defaults but what creates precision is familiarity of the pilot with x, y or z controls.
Its incorrect to conclude mouse and keyboard are more precise
on xbox one ....where you're posting...the games are dominated with gamepad controls. It would be inaccurate for anyone to write that gamepad is more precise than any other control method when discussing such on a platform where the games are first designed with a gamepad only development focus for this platform.
Lastly, for a pilot of real aircraft and spaceships. It would be inaccurate to say that HOTAS are not more precise than any other control type as these people spend 99% of their time operating while on HOTAS.
Thats all im saying...your comment isn't conclusive as a fact, it's only accurate to say it's what pilots on PC prefer who don't use HOTAS as often as mouse and keyboard. I personally own both but I'm more precise on a gamepad or HOTAs because of what I use most often.