A batter looking at the catcher's stance in the batter's box

Looking at high school baseball, often see batters in batter boxes looking at the catcher's stance. They are stealing at it whether the catcher stood on the inner corner or at the outer corner.

The second runner looks at the sign of the catcher. They take a glance at the handling of the pitcher's ball. Look at the sign of the opponent's director. They take a glance at the opponent's habit. It is possible to steal a variety of signs etcetera in the ground, and there may be some teams doing it.
I do not think they should not do it. There are various strategies and ways to win in battle.

But how about a batter looking at the catcher's stance humanly? Do super high school grade sluggers, superstars etcetera see the catcher's stance? No, they do not.
It is not an exaggeration to say that it is revealing that you are not confident about your skills at the time of seeing the catcher's stance. It is a shameful act. And it is cowardly.

The referee should be point out it. It is not the case when referee is point out other trashy things. It may not be noticed.