i'm sure it would if the coms are compatible. X2 is supposed to have much greater range than S2.
The weakest link isn't the controller, it's the antennas in the Skydio 2 itself, which are only one one side of the drone.
Skydio's CEO addressed it in this podcast, stating that wireless performance is one of the "weak points of the product" and cannot be fixed in software.
They might have addressed the deficiency in the 5 months of Covid downtime, but haven't seen any indication of hardware revisions made after the recent production restart.