According to many proponents of CRT or wokeness, absolutely he becomes white. People from typically non-white ethnicities are routinely accused of being white if they adopt cultural traits associated with white people.

And it’s entirely possible that if he was adopted at a young enough age, whatever this AI is detecting would read him as white too, assuming his habits and diet affected his development, as they might.

Indeed that would be consistent with your claim that there is nothing genetic about race.