A lot of people always write us off for one reason or another. This year it's, "Mourinho always wins in his 2nd season" and also Pep finally buying players to make the team he wants.
Conte is a beast, and sure Chelsea didn't strengthen in the way some might have expected but the team we have now will comfortably get us to January barring any significant injury crisis, and if we need to strengthen at that time, then we can.
Plus our Plan B(might even end up as A) is a good one when Hazard is in the team, as Atletico found out.