The original articles cites no explanation:
“Meanwhile, U.S. abortions have been dropping to their lowest levels in decades, according to other reports. Some have attributed the abortion decline to better use of contraceptives, but other experts have wondered if the rise in births might indicate a failure in proper use of contraceptives. Some earlier studies have shown declining availability of abortions. Cultural attitudes may be a more likely explanation.”
How would homosexuality result in fewer abortions, though? Theoretically, there would be fewer births, not fewer abortions.
Malthusian fear of overpopulation: Malthus saw two ways to keep population down, "positive" and "preventive" checks. Positive checks were nasty: famine, plague and warfare.
Preventive checks included voluntary actions reasonable people could take. Malthus (a clergyman) identified two types of voluntary action, the moral one of deferring marriage, and a variety of "vices" or immoral steps that included birth control, abortion, infanticide, adultery, prostitution and homosexuality.
The overpopulation elite - Rockefeller, Planned Parenthood and all those types push homosexuality in the schools for a reason. Our very existence offends and frightens them.
Conservatives are fighting really evil people who have plans for us.