I'm not sure he's willing to learn, at least not fundamentally. He has his ideas and when his team loses the team didn't apply those ideas correctly according to him. For example his team got exposed on the counter very badly in the Supercups against Chelsea and Dortmund. 8 months later exact same problems because exact same basic tactics. Actually if Welbeck could finish ... even Moyeschester United caused Bayern immense trouble under Pep. After 150 minutes they were leading, fss.
Arsenal were all over them before going down to 10 men. Whenever Bayern lost people brushed it aside as "unimportant games" (Dortmund 0-3 after winning the league, City 2-3 after being qualified for the CL) but they had trouble in pretty much every big game this season bar Etihad when City played naive attacking 4-4-2 and Dortmund away when Dortmund had their entire team injured.
As for this game: He bemoaned that the midfield was weak but Schweinsteiger and Kroos don't work well together in a 2 man midfield. Anyone who watches Bayern longer than 1 year knows this, their fans know this, even I know this. They have always sucked together. Neither is a dedicated defensive pivot. It's like playing Xavi and Fabregas in midfield with no one else alongside them. Why is he allergic to Martinez? Why does he not rate Götze? Ribery is clearly in shocking form. Götze is a talent as big as Neymar. If I were a Bayern fan I'd have million things to criticize.