Yet there are. Even his skating teacher talked about how ugly his skating was when he first came to her, and admits that he still has work to do.
I think it's ok, as he is an excellent athlete, and seems to be driven to succeed. His skating will get"fixed". As you pointed out, he already has good edges and mobility... with some work he will be an above average skater.
I also think his physicality will be good enough, even though it looks unimpressive even in junior. I do wonder whether he will ever have much of a defensive game, but if he realizes his offensive game in the NHL then you live with it... most offensively gifted dmen don't have great defensive games. Most of their energy is poured into offense.