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They will definitely get on guys about long swings, but AFAIK, not if there is no contact issue. They seem to get on guys about long swings if they're striking out and slumping, or if they're underperforming career norms.
As far as the concept of bat acceleration, as such, much less the concept of ki, how much do you hear that talked about? ... and it's not like we're talking woo here. A golfer would not dream of analyzing a swing without including the concept of acceleration.