I see no way to say that Harry Kane's performance is poor. Harry Kane performed well even though Munich did not win the title last season. And Kane's performance this season is also very good. Kane has 5 goals and 4 assists in 5 Bundesliga games. He also scored four goals in the Champions League. So I don't think there is any weakness in Harry Kane's performance. Bayern Munich won't benefit much from adding Harry Kane's replacement to the squad.
I wouldn't say Bayern Munich lost against Aston Villa with a poor performance. We saw the dominance of Bayern Munich throughout the match. But even then, Munich lost 1-0 in the end. This is Munich's misfortune.
You are another 2-line trash poster who doesn't get the point. When Harry Kane scores 100 goals in a season against Augsburg and 2. Bundesliga clubs in the DFB Pokal, it doesn't help Bayern Munich much. It counts for every top striker. Mbappe, Kane, Salah, Haaland, same thing. They need to score in the most important games. If they don't and they don't win titles, what are the 100 goals worth? This is exactly the issue Bayern is suffering from in decisive moments and this is exactly what set Barcelona and Real Madrid apart from the rest when Messi and Ronaldo were the kings. They scored when the team needed it the most. Not when the team didn't care because everyone scored a goal. Think about it and then I am looking forward to read your answer and keep the conversation going.