I wonder if those overtightened oil filters have been oiled on the thread before being mounted. The lubricated threads let the filter seat, and when the oil eventually dries or gets squeezed out of the thread after a few thousand miles, the thing cannot be unscrewed.
Any bolted union, when the threads are lubricated, create a clamping force that is 3 to 5 times higher than the design specification. Usually, the fastened union puts the bolt right under the yield point of the material and some safety factor that accounts for torque spec deviation form tool calibration and operator, and friction scatter on the thread and under the head of the bolt.
Kawasaki doesn't account for lubrication on the thread on its torque recommendation for the oil filter change procedure. In fact, on page 94 of the service manual (at least the copy I have) specifically says to oil the gasket, not the thread.