Some of the stats are poorly phrased and you have to read to the bottom to get the low down:
https://www.reuters.com/article/us-usa-health-sex/young-u-s-men-having-a-lot-less-sex-in-the-21st-century-study-shows-idUSKBN23J2LI
Will social norms move towards polygamy as women compromise in exchange for security?
Will social norms move towards polygamy as women compromise in exchange for security?
maybe, maybe not. It depends. Those young men may not be celibate by choice.
https://en.wikipedia.org/wiki/Incel
It remains to be seen in young women will choose celibacy, lower their standards, or embrace polygamy with "worthy" males.