Inter Milan is not a bad team anyways and they can't be forgotten for being one of the best teams in the league but winning their first game should not be used to justify how good they have become they are not the only team that recorded victory in their first game Napoli, Como and the other teams also won but until the teams face other good opponents that is when we can applaud them for winning. Napoli and Inter Milan are the strongest opponents in the league they will be the teams to look at for this season when the season gets very interesting until then let's not hype any team.
Yeah, they are a great team and will do great. There is nothing wrong with that, we should absolutely consider them as one of the leading candidates to win the league. However, they did had a very bad period in the last three years or so. Because while they did manage to win Serie A during that span, they failed to win last year on just very low points, and they had 2 UCL final chances where they lost.
So, it is not that common for a team to go back there over and over again, unless you are Real Madrid lol. That means, they could actually be very bad, because the whole team could lose hope about it and could be looking at this differently during this period. If they do, and lose hope, that will be bad.