How does not being forced make a statement not disrespectful? Not having children is a perfectly valid lifestyle choice, a childless person saying that raising

How does not being forced make a statement not disrespectful? Not having children is a perfectly valid lifestyle choice, a childless person saying that raising children contributes less to society than they do says a lot about how they fundamentally view themselves. It reminds me of the polar opposite of what gay man once said to me: "I love straight people, they make all the gay people" in reference to another man talking down about 'breeders'