Like with the covid shot and spikes accumulating in sex organs. The snipping of things and hormonal treatment means a generation of non breeders. Mix in just gay love and primarily adopting ... means massive population reduction.
So; abortion, pHARMA, medial harm, and lifestyle is the combo for massive population reduction over the next 1 to 20 years.
The thing that does not exists but is in TONS of shows and movies. Even Babylon 5 had an episode reference for it. Monsters Inc, Fear and Loathing in Las Vegas, most of the vampire concepts... Season 1 of Buffy with the Master and his human 'milking' machine.
"Turn 2 the rest are food."