What good is a $15/hr minimum wage for a person only capable of producing $10/hr in value? It's off to the unemployment line with them. Without a minimum wage

What good is a $15/hr minimum wage for a person only capable of producing $10/hr in value? It's off to the unemployment line with them. Without a minimum wage more employers would be willing to hire completely unskilled workers and provide them with on-the-job training. The higher the minimum wage, the more like they are to demand you already have the skills and experience necessary to be highly productive on day one.