Lots to respond to here, but let me start with micro vs. macro, which you've misconstrued.
When someone says that "getting a runner to cross the plate" is the important part of the game, he/she are right -- but in a game situational sense of
one scoring event. That is what Dusty is in charge of, and what he should be concerned with in some way, sure. His job is to figure out how to push across as many runners as possible, and a lot of "old school" strategies are based on just that perspective -- "small ball," bunting, sacrifices, stealing bases, what have you.
The problem, though, is that these situational strategies that first seem like a good idea in isolated circumstances had rarely (or never) been tested from a macro perspective -- and by that, I mean from a more abstract, statistical point of view and not from the level of game situations. That is -- does giving up an out actually constitute a wise decision in any game situation? Are managers really "manufacturing" runs in a more effective way when they use up one of their 27 outs to "move the runner over" or "take the extra base" ? In short, the answer is pretty much never.
So the expression "not making an out" is the stathead-ese translation of a macro concept (out avoidance) to a game situational perspective (what an individual hitter should try to do when he goes to the plate). It doesn't sound aggressive, but it can be effective. And it doesn't mean just walking.