Leaders arrange a person to do back office work, mainly in the following aspects.
First, because you are young and need experience, the back office position is a very training position, which can cultivate good habits and professionalism.
Second, this person is not competent for other jobs, he can't write materials, his business is unfamiliar, and his relationship is not well coordinated. To put it bluntly, there is no other ability.
In fact, there is no distinction between high and low positions. The key is to put yourself in a correct position and not complain. Some comrades in our unit have worked hard all their lives. They are hard-working and respected by everyone.
In short, there is an essential difference between "big housekeeper" and "document porter". The key depends on how you choose, whether you are smart, whether you are willing to learn and whether you are willing to think.