Article says:

A cantor, more properly known as a hazzan, has no formal role in Jewish law.

And then it says:

Traditional Jewish law restricts hazzanim to be males over the age of 13; the non-Orthodox Jewish movements allow women over the age of 12 to be hazzans as well.

If the hazzan has no formal role in halakha, how is it that halakha sets requirements to be one?  SJK