Napoli should enjoy the championship, but I think there will be a strange aftertaste. You should be satisfied, but if you go out for the CL in the quarterfinals against AC Milan, you still have the feeling that there was more to it. By the way, they were very happy when they managed to beat Juventus last week. For AC Milan and Inter Milan it has long since ceased to matter that they have not become champions as both teams are in the semi-finals of the CL. The 15 points can still be deducted from Juventus later, the case is still ongoing.
Napoli not only lost in the Champions League by Milan, but Napoli also lost heavily in Serie A by Milan. So, Napoli's elimination from the Champions League by Milan was a well-deserved result because Milan really can be consistent when playing against Napoli. Therefore, of course, Napoli will enjoy and or celebrate the achievement of the Scudetto this season, because maybe only achievement in Serie A is the best for Napoli this season and it remains extraordinary for Napoli.
About Juventus, even though it's about 15 points maybe the case is still going on but in reality Juventus' performance is also unstable at this moment. At least, the instability of Juventus' performance still allows Juventus to get out of the top four, so for me Juventus' position doesn't need to be an issue either. Because in reality, it's not only Juventus who have experienced cases like that, there are still Lazio and AS Roma who were also rumored to have the same case.