Nobody forgot anything. Tanaka didn't have it and Boone handled his pen poorly and you are completely misreading the comments about pitchers learning to pitch to hitters.
Starters do that. They have to because they are going to face a batting order two or three times in the same game. So again since apparently you didn't bother to read it the first time, when anybody talks about pitchers learning how to pitch to hitters that have been scouted, they are talking about starting pitchers. Relief pitchers don't do that. Relief pitchers go out and pitch their game no matter who is at the plate. Its the managers job to match up his relief pitchers to the task at hand because they are not going to go out to the mound and change what they do.
Again, does Kimbrel change what he does batter to batter? NOPE. He pitches the way he pitches and the batter has to beat Kimbrel at Kimbrel's game. Kimbrel is not going to change for a batter. Does Kelly change what he does batter to batter, Hembree, Brasier, any of them NOPE. Relief pitchers go out there and pitch THEIR game and you have to beat them at their game.
Tanaka certainly was not as brutal as he can be and Boone did a pretty bad job of handling his pen tonight.