It’s all relative to who he’s playing against. Obviously compared to other NBA Athletes he wouldn’t look all that athletic, but athleticism is more than just speed and hops. His body control, balance, and change of direction are all elite. When you look around the league today you realize the best players aren’t even all that athletic anymore. The elite players from the 2000s were way more athletic, so that’s actually interesting.
Against cats like us Luka would probably be out there doing windmills though