What an idiot. The only thing that directly causes teen births is teen sex.
Teenage girls often have babies fathered by teenage boys. LOL
And, schools that refuse to teach Judeo-Christian values and instead teach liberal nostrums as FACTS. Parents from the ‘60’s are numbskulls usually and think that their progeny are good blank slates for the old Jane Fonda-Tom Hayden-Dr. Spock mentality. With that and their love for socialism and pacifism which is also taught in schools, kids are inundated with propaganda.