Both. We know he's an incredible finisher, but of course he's just on a crazy hot streak right now. In time he'll have more minutes, he's already taking more shots now than he used to, getting in better positions, playing more games etc. Nobody outscores their xG to the extent that he is, but he's just getting better and better in his performances and getting in more chances. Using xG to rate young players when they first break in, playing in varying positions, often times from the bench or random mixed teams is always a dumb idea.