Basically, those guys trained a drone to beat human FPOV racers but they had access to the race course layout before the race and trained extensively on it. Can't do that on a battlefield.
Also: no shooting at enemy drones during FPOV races. Makes surviving to the end of the race simpler.
tl;dr, not in practice. Far as I can tell this is still the SOTA in FPOV drone autonomy:
https://spectrum.ieee.org/ai-drone-racing
Basically, those guys trained a drone to beat human FPOV racers but they had access to the race course layout before the race and trained extensively on it. Can't do that on a battlefield.
Also: no shooting at enemy drones during FPOV races. Makes surviving to the end of the race simpler.