Nothing wrong with him, but I expect a lot more discipline in defense when the big games come soon. Vs top teams, blocking the fullback runs are key part of off the ball duty as a winger.
Football is not only about tricks, backheels and fancy passes.
Of course, if he does like Vinicius and fucks teams up scoring multiple goals in CL key matches... then his defensive duties will be understandably less important.
It depends on many factors, but generally stars are stars after they cover themselves in glory. Champions Leagues, La Liga titles, stars win those by being decisive.
You are either a special offensive player that marks the difference when other players can't, or you're just a top young player that needs to put in a shift off the ball as well as on it. Doing neither is not an option if you aim as high as possible.