I was a little surprised the article didn't mention declining sperm counts and testosterone as a possible factor.

My impression was that increased exposure to toxic compounds (microplastics, estrogen mimicking compounds, etc) has been contributing to declining sperm counts / motility, and things like earlier onset of puberty in women.

Wouldn't those at least have some effect on sex drive? I'm looking in particular at the decrease in adolescent masturbation, as it's hard for me to imagine that "increased video gaming" is a culprit for this.