I'm actually not sure Fast's stats are still "junk." He is on pace for a career high of 36 points.
Over the four years prior to this one, Fast has been averaging about 0.366 points per game, this year that has jumped to 0.444 points per game.
This year Strome is at 0.892 ppg, and the last 5 years he has averaged 0.461 ppg (I use 5 for Strome instead of 4 because his ascendancy to useful player seemed to have happened 5 years ago, versus 4 for Fast).
They eached experienced a substantial jump this year, Strome's was just much larger.... but Fast is kind of a defensive forward whose role probably isn't to chip in points. Plus, again, the lesser time spent with Panarin.
I'm not weighing in on the ultimate debate, but these are the numbers as I see them.