After the match with Leipzig I can say that Bayern does not feel the absence of Müller yet, their midfield and attacking line have shown that they are capable of scoring a lot even against a strong opponent. I think that Kompany is not against young players, but he would rather give preference to an experienced player than wait until a young player gains enough experience to play in the main team. Moreover, Bayern is fine with finances and they would rather buy a player like Diaz than put a young striker.
Your analysis about Bayern Munich current situation is good. And based on their dominant performance against Leipzig team attack is incredibly strong making Thomas Müller absence feel less significant for now. 6-0 win with goals from Harry Kane and new signing Michael Olise clearly shows their scoring power.
And you are also right about Vincent Kompany. With immense pressure to win immediately it is very likely he would prioritize experienced player. This is further backed by club financial strength which allows them to buy Luis Díaz he is fantastic debut with goal and two assists instead of having to rely solely on their youth academy. This transfer strategy clearly shows that club is focused on achieving immediate success.
with the bayern munich team that I saw against Leipzig last weekend bayern attack will be a threat to any defense when it comes to the bundesliga because they were very potent scoring six pass one of bundesliga finest thems