It is possible that Harry Kane's curse will not continue if Leverkusen does not recover this season, but who would have thought that Xabi Alonso would be able to lift Leverkusen's performance to be so brilliant that it would be very difficult to stop. So this is clearly just a matter of lack of luck and in football luck plays a big role.
Yes, he didn't bring bad luck to Munich, but he was just unlucky to get the title for Munich, but we know that Leverkusen is quite strong this season, but we saw that Leverkusen just suffered their first defeat this season. Hopefully it's not a disaster or a decrease in confidence. They will enable Munich to compete again in the Bundesliga and dominate again next season. The competition is quite tight and we know that there will be many new players arriving in several Bundesliga teams, of course to face this competition.
Kane must be more patient in this matter because he still has many opportunities to perform even better next season, bringing another Bundesliga championship for Munich and also the UCL trophy next season for Munich. For me there is also no problem with Kane because he has scoring quite a lot of goals for Munich and that was quite good and productive, it's just that he was unlucky. As you said, we will all definitely see that next season there is tight competition in the Bundesliga and Munich must be able to get out of every pressure to be able to dominate again.