Completely disagree. His decision making is excellent, and for a 19 year old, it's as good as you'll see. It's that's which makes me (and many others) think he has the potential to go to the very top. The amount of chances he creates every game is silly and those can be crosses, long passes, slide through balls, running at a player (left or right) etc so his assists should probably be double and could be even higher than that. Mavididi will get better as well but his decision making is markedly worse and it's why Fatawu has a much higher ceiling that him.
I do completely agree that his finishing is pretty poor but I suspect that is a concentration thing. Will definitely improve but if it does truly click anytime soon, he won't be playing for us, that's for sure!