Allegedly an anti-drone measure, although I’m not sure exactly how they thought it would effectively confuse drone sensors.
From what I have seen reported, it's more for AI target recce, much like the debris you mentioned. The tires supposedly breaking up the recognizable shape. What I haven't heard (and don't expect to get an accurate number in open source reporting) was how many successful hits were done by AI vs the cellular remote controllers. Or if the controllers put it on a terminal path after classifying a target and then switched it to autonomous. Some of the exact targeting of wing roots and engines underneath the fuselage lead me to believe that's more man-made targeting.