Earlier quoted context omitted.
If they were trying to combat cheaters, they wouldn't have released an official controller that allows generic, 3rd party, unauthenticated inputs: the Xbox Adaptive Controller. It would be pretty trivial to hook up a Pi Pico through the jacks and USB ports to be able to make a KBM adapter like that. There just hasn't been a point making such a device when the xim/cronus works fine. It might not even need the jacks, a…
"Pretty trivial" but only for the small percentage of people that are tech minded like that and who can be bothered; it's not an issue, not compared to laypeople being able to buy an off the shelf ready to use product.
The difference is Microsoft will now get more money out of the cheating products than before, not sure that sounds the right incentive but that's what is going to happen.
Those things cannot be fixed with software.