Why should an adult with many years of life and work experience be forced to struggle with meaningless theories and concepts yet there are modern methods of education?

ACAEL
Mapping and Accrediting Mature Talent
Why should an adult with many years of life and work experience be forced to struggle with meaningless theories and concepts yet there are modern methods of education?
It is absolutely unnecessary to force an adult with many years of life and work experience to struggle with meaningless theories and concepts, unless the adult wishes to venture into complete new field that has never been tackled as part of his or her life-skills. However, the same could still be approached through modern methods of education