The Boston announcers had the opposite tone. They repeatedly talked about how it was the Brewers' aggressiveness that resulted in success. Even by that point the Brewers were around 25th in MLB in walks. They are currently 27th in walks and last in the NL. Then again, last year the Brewers finished dead last (30th in MLB) in walks. So I admit that maybe it isn't a new coaching decision. I think it's the players who are on the team. Gomez, Gennett, and Segura are all guys who don't walk much. Braun and Ramirez are the only guys with a high walk%.