Defending the title is not easy, even clubs from other domestic leagues also feel the same way, such as Manchester City, which is not completely consistent, Bayern Munich, which has tough competitors such as Leverkusen, which does not slip up easily and also Barcelona, which is quite far behind Real Madrid and Girona. This can be concluded that defending the title is not as easy as turning the palm of your hand, especially since the Serie A League competition since Juventus did not win the Scudetto, every season they always change clubs, by looking at Napoli's current performance it seems that Napoli will no longer win the title like last season but they can fight in the top 4 so that next season we will still be competing in the Champions League.
Yes, I hope so being in the top 4 isn't bad because if they catch up with Inter it seems very unlikely that Inter won't experience a decline especially since their distance is already too far namely 14 points. Even though there are still a lot of games remaining but catching up to that many seems impossible for Napoli.
I totally agree with your point, defending an is not an easy task, especially when you are in a league that is not usual dominated by one team, Italian this season is a very competitive one, and having major team contenders such as Inter Milan, Juventus, and AC Milan ahead of you and with such a gap in point 14, it definitely would leave the title defender with no option other than to fight for the top 4 spot and to play to qualify for the Champions League competition next season. And this is the fact about what Napoli is facing right now, I kind of think the title this season would no longer be in their favor looking at Inter Milan's performance this season, who are currently at the top of the table.