Yes, it’s a mess. Far more girls were aborted or abandoned as a sons were preferred leaving an imbalance of men to women. Families get picky about the spouse of the only son and young women know the pool is big.
We are starting to see the children of the children who were born under the one child policy come of age. They have very few references to sibling relationships and no cousins. Many were left to their own devices while parents worked. I think it may be difficult for a lot of them to marry as home life has been more solitary than we might realize. There is a substantial divorce rate in China as well.