People are not supposed to kick their kid out because of the negative influence he is making on the other kids. That would probably put the nail in his coffin
It might or might not, but presumably they’re worried about not putting the other children in coffins.
You are naive if you think kicking a kid out for being a negative influence will leave a positive impression on the other children.
It’s not about making a positive impression, it’s about removing a negative influence.