I’m not sure who (or why) decided to bunch X and Y adjustments into one “XY”- they are different. At least on my K1C.
These are filament-dependent values and one should be able to calibrate them once and save in settings rather than keep adjusting values for each imported STL.
Would it not be better for the end users / simply more logical to have 3 axis there as Shrinkage (X), Shrinkage (Y) and Shrinkage (Z)?
Print a 25mm cube, measure, enter values, re-print to verify and save for future use with this particular filament?