I find that statement rather silly. The majority of supervisors were hard working union employees who wanted to better themselves and their company. Now in most operations you have about 1 or 2 supervisors for everyone 10+ employees. Normally out of that batch of employees, you have 2 or 3 union employees who drag their feet and attempt everyday to do the bare minimum.
They're some supervisors that are indeed intent on moving up with the company by being extremely harsh or doing whatever it takes to meet numbers. However, for the most part, supervisors are employees who have expectations from both management and union employees and often are just doing their job running a business. And just because you get written up for missing work because your child or mother was sick does not mean they are soul less. It just means they are trying to protect their business.
I find this statement silly for a number of reasons, mostly for the generalities just thrown around as fact. Your ratio of 15% management potential to 25% dumb ol' lazy union slobs would certainly hold no water in my particular work group, and is probably based your biased business model that feels you need to control restroom time.
The betterment of the individual does not need to be confined to converting to management. I have done outside work and volunteerism for a number of organizations in my tenure at UPS; I feel I am better off and much more rounded as an individual for doing so.
And yes, if you get a written warning for missing work for an ill child, you are soul less. Let me give you a little personal backround here, Junior. I am an excellent driver. Sixteen years safe driving. No complaints. No follow-ups. I have been told by two on-car sups that I am the best driver in the building. (think about that) I have two children with very serious health concerns. I have spent two months of vacation time at area hospitals for SURGERIES ALONE. If I call in for an emergency I better not get some song and dance about how this is bad for business (if I have to work with something like this weighing on my mind, how productive would I really be?), just give me the time and put your contingency plan (which I am sure you have being the experienced business person you are) into motion.
Ah, feeling much better getting that off my chest.