Jack up kit versus dropping the forks.

[PieEater]

I don't really understand the "makes the bike fit me " argument, it doesn't change the bar/seat/peg relationship, so its just sitting at a standstill that is different.
I would have thought that doesn't really matter. Am I missing something ?

As you say the riding position remains unchanged, but as the seat height is increased the bike looks and feels a better fit for taller riders even if the feel part is most evident at a standstill when you have your feet on the ground. Having said that the main benefit of a jack-up kit remains the improved handling.