ok, lemme see if i can get my thoughts out into a coherent paragraph
think about what the clutch petal is actually doing, as you push the petal, it uses the hydraulic system to push one end of the clutch fork and releases the pressure plate thus disengaging the clutch plate. now, as there is less 'meat' on the clutch plate, the actual plate will be thinner, and the pressure plate will need to move further to squeeze the clutch plate and engage the clutch. that means that as the clutch gets more and more worn down, the point of engagement of the pedal will get higher and higher.
this logically makes sense cause imagine you have a brand new clutch plate that is relatively thick, you will have to press the clutch pedal down pretty far cause you have to put lots of pressure on the fork pushing on the release bearing to disengage its grip on the clutch itself.
now think of an old clutch plate, where it only takes a little bit of pressure on the pressure plate to cause it to let go of its grip on the clutch disk.
now think about going from an old completely worn out clutch, and replacing it with a brand new one. since it took so little pressure on the hydraulic system to release the old clutch, when the new one is in, the release point will now be almost on the floor. (from personal experience) this is because now, you will have to put that much more pressure on the release fork to disengage the clutch
now . . . did that make any sense?
or is that even right,
I think it is, cause after i got my clutch replaced, the release point was on the floor, but after a few turns on the adjustment nut, it was all better