That's right. You were commenting on one specific case. The other posters were speaking in generalities. I see nothing wrong with speaking in general terms i.e. children will do better with married parents. It's great for the little girl that she got a good daddy but speaking in general terms an unmarried teenage girl should be encouraged to put the baby up for adoption.
Another good option would be to find the bum that impregnated the girl and let him understand in very certain terms that he will be part of a wedding ceremony within nine months.