Inter is indeed a good team and Inzaghi is also good, that's why Inter is currently ranked 1st in the standings and Napoli, who was previously ranked 1st in the standings, can be shifted by Inter, of course this is very good. However, in my opinion, even though Inter is currently the strongest team in Serie A, I think Inter must remain vigilant because I see that their points difference with Napoli is certainly not too far apart and honestly, I think Inzaghi also needs to improve Inter's performance because their performance should not drop like when they played against Parma, Inter could not beat Parma.
Inter Milan are a bit stable now, that's why are performing this way, the team is experiencing some sort of progress at the moment after fighting their way back to the top where Napoli were occupying and this has boosted the confidence of the entire squad and I think it would be difficult for any other team in the Serie A to stop them now, and I also believe this has been made possible as a result of the philosophy of the inter boss who is determined to secure the scudetto this season.
Inter Milan is in super form for which it surprises me how you are putting it mildly. The traveled to Germany and defeated Bayern Munic in the first leg of the Champions League quarter finals, an outcome I never thought was possible. Winning the Italian Serie A is certain for them at this point because Napoli that is supposed to give them headache seems to be very reluctant and not optimizing their opportunities. My earlier prediction was that Napoli would begin to close the gap when the UCL becomes more intense but that is far from reality so it is simply wise to give Inter Milan the league already based on the facts on ground and for the reason that Napoli is not doing what I expected them to do.