Idk what to tell you all, if you can't understand he didn't make this lineup purely out of his will but because he simply had to.
Flick is known as a manager who won't rest his players unless they really need it and he gets advice from the medical staff that they really need it. We've known this since a long time, it's nothing new.
In Barça, in every case he decides to rest players he has to play absolute segunda level morons instead of them because our squad depth is shit. That part is not his fault. He already inherited the club when there was a ton of injuries and he agreed to deal with all of that. He managed to bring us 7 wins in first 9 games in charge, with an atrocious squad at hand.
We're still top of the league and Clasico is not that far away. The end of this winning streak was inevitable. Flick should learn from this and rest players more when we have a comfortable lead (such as vs Valladolid or Girona) but we as fans should not panic and should not deny him his incredible start to the season.