Your points are valid, but this I do not understand:
> Not to mention testosterone levels dropping
Why should declining testosterone levels prevent men from socializing and making friends? Logically, it should be the other way around, right?
Increased testosterone increases confidence, motivation, goal-oriented behavior, risk-taking and social assertiveness.
It’s just the adders for all the other health metrics declining. Most are due to addiction to pleasure, lack of movement, obesity, etc.