Stop the crocodile tears. You know very well it's the best possible place for him, and if you could actually be honest with yourself, you'd admit that you're immensely proud Musiala is playing for Bayern. You'd hate it if he were to be bought by some other big club. What if he had stayed at Chelsea?
In reality, you Bundesliga remainder guys, Restdeutschland, love Bayern, because if it weren't for Bayern there were little you could take proud German credit for. We are the ones providing you with any feeling of success, satisfaction, and pride that you can gather from football and that you can then attribute to the 'German football' identity. German football, all that really means is being rather poor while bathing in Bayern's glory. Even your current coach, which you surely feel very proud about, what with his big name and hipster promise, is only at your club because Bayern brought him into German football.
You can protest all you want, in reality you're all Bayern fans of the second degree.