>>33543534There's not much they can do. Most likely scenario is its used for easy distribute for VGC.
In the unlikely scenario its required to run USM and is used to prevent altering of save data when not running, they'll just find a way to patch both, or even just functionally disable this.
Worst case scenario where they try to prevent people with FBI from playing altogether (unlikely because even those banned can still access the eshop, meaning they still want your money), it'll still be patched within the week.