It's too early and those types of midfielders always take a bit to get used to the league, but it was the same shit with Jorginho. First few games people were hyping him up because he did well in a different league and because the managers at the time and the interest in the summer, was doing a lot of simple passes but they were ignoring them actually getting caught on the ball, getting out-muscled and not actually playing very well. Jorginho essentially did the same stuff all season and at the beginning they called him "brilliant", and by the end he was a waste of space and massively overrated.
Rodri far more Fernando than a Fernandinho so far, but again, very early and it's to be expected.