The camera is dependent of all of these data to make an educated guess as to how the lens is performing, if data is incorrect something will be off for instance exposure or accurate focus.
For instance exit pupil is very important on wide and ultra wide angle lenses with regards to exposure calculations for the camera. Tested and confirmed especially on for instance 15mm and 16mm lenses.
Dandelion CPU's has generic data stored and only aperture values and focal length is 'programmable' via the most archaic interface seen in decades.
PS distance data is mostly used for flash photography