Why are you surprised when pep ruins another attacker. How would you expect him to do anything when city as a team 99% of the time just passes the ball around the box. Any time he gets a vertical ball he's dangerous but he gets it once or twice per game because pep does not want to play like that.
City certainly don't play to his strengths. But Haaland doesn't seem to be improving other aspects of his game. He's still really poor when it comes to anything other than running in behind defences. Harry Kane would have suited the way City like to play under Pep far more. Haaland's style would suit Chelsea better, or Liverpool under Klopp.