I would say he's plenty good enough. Clearly not too good, if he wasn't even starting. To be too good he needs to refine those moves, end product, and decision-making.
There's Dembele with his patented defense of his own teammate, blocking his dribble :-| This time Kagawa was the vicitm. Don't get me wrong, Dembele's great, but he has some really annoying habits.
That doesn't change the reality he's not "too good". Maybe you could use that figure of speech about Mbappe. He's 18. Age is sort of irrelevant anyway when it comes to that classification.
Christian was singing hard there. Looked like it came natural. What an all around talent. Dembele didn't know the words. /s
I guess Reus is not too good either if he was subbed out for ......................wait,...... Pulisic .
Reus was injured and starts regularly. Point was let's respect our quality players while not getting hyperbolic about their current ability and hyper-defensive when small critiques are made about their games to get the level we all want them to.