I really have to wonder if you googled something and picked the first result without reading it, because your source doesn't refute anything about the GPs statement that "most men are just not having sex in their 20s anymore".
> The researchers obtained the self-reported information from the National Survey of Sexual Health and Behavior and used responses from 4,155 people in 2009 and 4,547 people in 2018. These respondents to the confidential survey ranged in age from 14 to 49 years
> ...
> The decline in adolescent masturbation is interesting, and we were the first to include it. That one deserves a lot more attention
1) Includes adolescents and older people
2) Covers "no sexual activity, either alone or with partners" which is far broader than sex
Here is an article with a link to a study that actually provides evidence related to the statement: https://news.iu.edu/stories/2020/06/iub/releases/15-sexual-i...
Study: https://jamanetwork.com/journals/jamanetworkopen/fullarticle...
> The study [...] looked at the sexual activity and number of partners of 18- to 44-year-olds in the U.S. from 2000 to 2018.
> During that time, the researchers found that sexual inactivity had increased from 19 percent to 31 percent among men age 18 to 24. Men and women age 25 to 34 also reported an increase in sexual inactivity during the time period. This coincided with decreases in those who had sex at least weekly and in those with one sexual partner over the past year, while the proportion of men and women with two or more partners in the past year had remained largely unchanged.
It was 15% -> 19% for women age 18 to 24 in the same period.
> More men than women reported having no sexual partner (16.4% vs 12.0%; P = .04) and 3 or more partners (14.5% vs 7.1%; P
The study also happens to provide evidence for the GPs argument that young women are "all dating the same guy".