Depends on the umpire. Saw a 14u game last weekend where the strike zone appeared to be the size of a post card, for BOTH sides. Rather than take the OP's approach though the kids on both sides started lunging at balls to attempt to get hits. Lots of walks and lots of fouls. It was a really bad game to watch.
I have mixed feelings on that. I’d argue to have technology call pitches not swung at if we were talking about pro ball where it was monetarily possible and that would resolve it. But even if MLB went to it, there’s no way it would be something many amateurs would see.
That means when an umpire with a lousy zone showed up, what you saw would be pretty much “normal”. The only way to battle it would be to change the current trending approach to hitting which is swinging only at pitches the hitter can drive and go back to teaching kids how to hit a wider range of pitches.