I totally agree that league matches are quite competitive and interesting at times, but the fact that Bayern always win the title at the end is annoying fans because we all want to see some other team win the league title.
Furthermore till Lewandowski is playing for Bayern I don’t think any team will be able to dethrone them, but once he leaves a opportunity will definitely open up, and let’s hope then one of the teams grab the opportunity and wins the league title.
Lewandowski is a really special striker for Bayern Munich and for football history also. He has had a very big role in Bayern Munich's championships so far. And it is even more fascinating that Bayern Munich are not a team that are depending highly on Lewandowski. They are performing superbly as a team. Even in the absence of Lewandowski, they still don't let their system shatter. Against a team like this, all the other teams in the league have a low chance.
Yes I agree with you about Lewandowski and his role in Bayern Munich. However if we talk about international tournaments then players like Lewandowski are able to make a difference alone and therefore his role cannot be overestimated for the club.