The 'Pro-management' side of the world is lying by trying to justify workers wages at all. It isn't about 'first jobs' nor is it about undeserving minorities.
Pro-management people want to pay as little as they possibly can to anybody if they can get away with it. They would bring back slavery if they could. Their justifications are disingenuine. They aren't racist they'll happily enslave anyone they can regardless of race, job skill or education.
"Suburban, white, unskilled workers on a GM assembly line during the golden years that made America great" unionized and forced higher pay and better wages.
These days management has gotten a whole lot better at stopping people from unionizing. They pay only to the level that prevents people from rebelling. The less empowered people are the lower the pay. They don't care if the least empowered rebel...they have police to deal with them.
What we need is government mandated profit sharing for all workers. That's a totally capitalistic way of fixing income disparity.