If someone in sales can't sell and can't make their numbers, why should they continue to be employed in sales? I can't think of many professional sales forces that allow sales people who can't sell to continue their employment. Is the culture at UPS dead? No, but it is changing. In the past, BD was "customer service" and was the home of some that did not really fit in at other departments so they were sent to customer service since they could not really do much damage. This was back in the days before RPS and any meaningful competition--customer service really did not have to sell anything as UPS was really the only game in town and customer service were more order takers and customer maintenance than true sales people.
It's a very different world now---lots of competition to deal with and global supply chains are a complicated thing. Just becuase you are a good driver, a good sorter or a good I.E. planner does not mean you will be a good sales person. IMHO, UPS has recognized this and is changing to adapt. I think that in 5-10 years, the sales force will be made up of true sales professionals and a majority of them come from outside of UPS. The pay structure will change and there will be more upside potential for those that sell and bring in the high revenue packages. Sales is tough--if you don't like the constant pressure to perform, it's not the place for you. If you can't bring in more money that is paid to you on a consistent basis, what are you adding to the bottom line? Harsh? Yes--but that is the world of sales.