The teams having this much wild results is something we are definitely not that used to. Inter losing to Milan is something I could have seen, but I also expected them to win all the other games and they failed, which is why I think it's quite obvious that every team is doing just mediocre at best, everyone is so close to each other. Juventus looking good, Napoli definitely looking great.
I honestly didn't expected Napoli to do this well because their move on Osimhen was a wrong one if you ask me and they should not brought in Lukaku and they should have put Osimhen there, it would have been better, or so I thought. Looking at how they are doing right now, we can say that maybe I was wrong and maybe, just maybe Conte knows about football more than me lol. Obviously we are so used to seeing managers not do that well and fail that I just automatically think that they made a mistake but turns out this time Conte knew what he was doing and that's a good thing.
Conte knows that Napoli need a quick solution to overcome their problems. So Conte took a mature striker who didn't need much time to adapt to a new team. And Lukaku is the answer. So now we can see that Napoli is truly great thanks to the composition used by Conte.
But to be honest, I also think the same as you. But I also realize that in the short term using Lukaku is the best. Because we saw that AS Roma and Inter Milan also managed to get good results in attack when they borrowed Lukaku from Chelsea. Maybe Conte really understands Italian football best. That is why his career was much better when he became a coach in Italian teams. Like when he used to coach Inter Milan.