A lot of people think that anything can be learned with a bulletpoint list, without recognizing that what they are actually doing is following a program like a robot, not actually learning.
As a trainee within a company you might have a greater insight within the whole industry, but my point of view is the big corps do not want thinkers. They mostly want process handlers, who can be replaced by anytime, without any disruption on the company's operation. Any position that requires a great knowledge and complex problem solving skills are hardly replaceable, therefor slicing a complex tax into little peaces where a bulletpoint list is enough to handle is the optional choice for them...