I wondered why China was cracking down on Recommendation algorithms and there was not much going on in the USA about the same thing. If you have questions about what these are and how they work, see: https://towardsdatascience.com/introduction-to-recommender-systems-6c66cf15ada
The Chinese may be right to look more closely at these. We are allowing tech companies to write recommendations for all of us on what movies, books, text, et al and we don't have any oversight of these products. We have enough problems with deep fakes, biased search results, and manipulating where users fall on pages of searches that we don't need any more help with recommendations (or lack of recommendations) based on these tech giants deciding what books we would read, what articles are the most authoritative, or what sites are best for certain types of things like recommendations for Supreme Court Justices.
We need some research, some of which will appear in my next book called Government Approved Opinion - about governments manipulating public opinion. There needs to be much more.