I hear this quote in these contexts, but the ideas have always been there, abolitionists have existed as long as slavery has. It was wrong then and wrong now.
one day we may say the same thing for the casual meat consumption of today.
ideas are here but most people don’t think it’s horrible to have factories of meat
So wrong now it would have been a legal marriage in at least five states (pending judicial or parental approval):
In California, for instance, the general marriage age is 18, but children may be married with parental consent and judicial approval with no minimum age limit.[45]
https://en.wikipedia.org/wiki/Child_marriage_in_the_United_States#U.S._states