That looks like its caused by contaminants on the panel prior to the first paint application - probably from the robot paint sprayer rather than anything else.
It happens - not a lot but it does happen, sometimes its as stupid as people handling a panel without gloves on immediately prior to painting. This has much the same effect as handling a halogen bulb with bare fingers - the bulb will fail much sooner than expected simply because of the residue left. Same with the paint job - it won't be properly bonded to the panel and this is the likely result. If that side of your car is normally in direct sun then that would accelerate the process greatly.
If it goes to court then its easy enough to confirm its the original paint which would preclude any sort of claim from Kia that the car had been in an accident - and was sprayed by Stevie Wonder/finished by Boycie
After that then I don't see how it could be argued as anything other than a fault present at the point of sale/paint not fit for purpose.
The area around the headlight is more complex as you don't really know how the delaminating paint will react with air/water/whatever the headlight seal is made of.
The idea that those photos are due to an accident or accidental damage is risible.
It looks like all of the delamination is on one panel and nowhere else on the car?
If so then insist on a new panel, not a respray/whatever. Its the panel which is the failed component, not the paint.