99.6% is not 100%.

Sure, but the Rangers win one game out of 250. For all intents and purposes, the game is over.

by your logic the game should have just been called at that point instead of continuing to play at all. if you want to padres to stop trying to score, it's only fair that the rangers also stop trying to score.

I didn't watch the game in question, but yes, both teams trying to end the game quickly definitely happens.

it is always smarter to try and get more runs in baseball

Yes, which is why teams never take out their starting position players when the game is clearly over. That's also why teams never put in their worse relievers when the game is clearly over. Oh wait...