You are just repeating the framing of the article. Next you'll mention a citation from a biased source.
Tht article doesn't mention the majority of those marriages between 17 year old female "children" marrying male "adults" (that are 18, 19 or 20 years old).
Children versus adults is a common framing, that is repeated by even the less biased sources such as the BBC or PBS: https://www.pbs.org/wgbh/frontline/interactive/child-marriag...
Crossing a legal line from a "child" of 17 to an "adult" of 18 doesn't have the implications about real world differences in wisdom we might hope for.