Changes in the Serie A standings are very likely to occur every week. Moreover, the points difference for each team currently competing at the top of the standings is very small. Winning and losing will affect the ranking. I think this is what makes Serie A this season even more interesting. Atalanta scored more goals but they also conceded very often in each match, the chances of Inter or Fiorentina who still have a difference of 1 match are very likely to catch Atalanta at the top of the standings.
Yes, it's true that the ranking in the Serie A standings can change drastically even with the results of just one match in one week. Especially in the top 5 rankings, all of which don't have much difference in points. Even Inter Milan, Fiorentina and Lazio each have the same number of points, namely 31 points. But Inter Milan and Fiorentina can indeed be superior because they still have 1 match postponed that they can take advantage of. Even though the postponed match itself will actually bring Inter Milan and Fiorentina together. But every season, Serie A always has a different excitement that makes this league never boring.