True. And Barca's top scorer is Argentine. And RM's is Portuguese. Your comment about the German youth system is incorrect. It's fairly common knowledge that they are spending gross (and increasing) sums on domestic player development, and clearly producing very good young players ... many of whom are on Bayern or Dortmund.
Now, it's POSSIBLE the UCL results are merely a coincidence, or a "golden generation." These things happen. For me, I see method in the madness.
I also see the Guardiola hiring as a decision to take the next logical step: 1) Physical; 2) Technical; 3) Tactical.