It is because people think Man City is still as strong as the last season. But if we consider there are some changes in Man City squad, we can understand that Man City are possible to get draws or loses. Also, it is true that Man City played against strong teams in EPL in the last 3 matches. So, it is not easy for Man City to get full points. Moreover, since De Bruyne got injury for a long time, Man City performance is decreasing a lot. Pep still can't get a proper solution for this problem, it seems no player has the similar capability as De Bruyne. I think Bernardo Silva can be the right player to replace him, but it seems Bernardo Silva has a different style in playing. So, he can't be an effective solution for the absence of De Bruyne.
Don`t see completely see Man city as if they lost their last season form, the three team they played against last season had a bad season especially Chelsea who is still trying to get back to winning ways, while Liverpool is back now, Spurs is just currently affected with injuries which has affected them in their recent match but above all Pep would be really disappointed not to get the entire point against spurs since they were the better team
All I can say is that Manchester city weren’t this poor defensively last season. They have been conceding a lot of goals this season and this run of draws is the longest Manchester City have gone without three points since Guardiola's first campaign. Many might not see it because they have gone through hurdles like this and still bounced back. It’s bad that Manchester City have led against Chelsea, Liverpool, and Tottenham but have conceded eight goals in those 3 fixtures as many as they have let in in their other 11 matches combined. That has to be a concern. We all know that it’s hard to win anything with an unreliable defence. The absence of Debruyne isn’t restricting their attacking play. They have scored 36 goals so far, and I think they’re doing well. Where the concern lies is in the defense and Pep should find a solution to that.