First of all, you can't deny the benefits of college students going to the grassroots, because it is encouraged by the state and the trend of policy.

However, you can demonstrate from the following two points:

1. Now the state encourages college students to go to the grassroots level, which is a product of specific historical conditions and did not exist when the employment situation was good in the past. Of course, apart from the educated youth of Chairman Mao's era receiving the re-education of lower middle peasants, the two are different in nature.

2. Universities train specialized talents, and only in specific positions can they give full play to their professional knowledge for four years. However, due to the backward development and incomplete industrial structure, grass-roots units cannot provide a platform for most college students to show themselves.

I think of these two points at present, and you can refer to them.