Hello historians - I came across the hypothesis that mechanisms such as religion and social shaming were developed to control unrestrained sex, ultimately to prevent a huge population boom when mortality rates were falling (i.e. conceiving more children than one could support). Is this an accurate answer as to why sexuality became a taboo?

The closest thing I could find in this subreddit is u/vertexoflife's answer which details when and how sexuality was repressed by Christianity, but not why.

Thank you.