If Kompany can win all the average clubs and lose to Leverkusen and Leipzig, I think he will be able to win the league this season but I don't think that everything will go tossy for him like he expected. In the long run he would be face d with challenges when he has injured players. Kompany have started the season well by winning his matches but that doesn't mean that he has the ability to win the league because I see Leverkusen as a big challenge to him.
The ideal conditions of a strong team are always difficult, but it is not impossible that weak clubs will be easy to beat. This means that predictively, a strong team may lose points, but it can also happen when playing against a weak team. In addition, the long and dense competition allows them to live up to what you call "injury": It's too early to say Munich are league champions this season. But if Munich is one of the candidates for the league title this season I agree.
In my opinion, all clubs are not so hot in terms of tension in the game, it can be seen that several other big clubs are still below the top five in the standings, so in the middle of the season there could be changes, even at the beginning they went crazy but in the middle they weakened, Bayern Munich is still playing safe and careful in getting full points in the first two matches of this season, so it is not yet certain whether Bayern Munich will come out as champions this season or even Leverkusen, or it could also be RB Leipzig who will give a surprise this season, even though there is Borussia Dortmund but we know that they are destined to never feel the Bundesliga title.