Napoli is only 3 games away from winning the Scudetto this season, Conte makes people forget how bad Napoli performance was last season which was only able to finish in 10th place in the Serie A standings. Without two star players, Osimhen and Kvaratskhelia, Conte is still capable of bringing Napoli to this point. This is all thanks to his long experience and deep understanding of the competition for the Scudetto in Serie A. Genoa, Parma and Cagliari seem unable to stop Napoli progress in the remaining 3 matches.
I would add a couple of things: I don't know why De Laurentiis, the Napoli president, chose to hire an ex manager like Rudi Garcia after winning the Scudetto, that guy is not a coach, he's a disaster, everybody knew Napoli's season was going to be a failure. And that failure helped a lot Conte because let's be honest, Inter are by far the best team in the league but they also play in the Champions League, and that takes away a lot of energy and concentration; on the other hand Napoli are not playing in Europe, so that is a huge advantage for them despite losing some big players.