Russ wins 75% of the time when he gets a triple dub. It does have impact
You're looking at this backwards. That's like saying, "LeBron wins 90% of the time that he makes the last shot, therefore he should always take the last shot."
Russ hunts for triple-doubles EVERY game. It's not like he only tries every third game. He tries almost every time.
But when he's losing (when his team misses shots and the other team makes them), it's harder for him to get a triple-double. That's because you can't reach 10 assists if your teammates miss too many shots, and you can't find 10 rebounds if the opponents make too many shots.
But when he's winning, it's easy to get a triple double. That's because his teammates are making shots (so stat-padding assists is simpler) and the opponents are missing shots (so stat-padding rebounds are simpler).
Russ's teams win when they make more shots and when their opponents miss more shots. That's it. It has NOTHING to do with Russ chasing a triple double cause he is already doing that every game.