Sure it does.
It highlights the folly of the One Child Policy (and by extension, the idea that governments can/should determine how citizens live their lives).
It exposes the social toll from the same policy, as well as the Chinese government's responses:
On the one hand, the government uses its security apparatus to block these grieving parents from travel, if they believe that they plan to protest.
On the other hand, the government is also taking steps in the right direction by providing care and resources for these same parents.