A child who insists that he is no longer a male (or never was) is definitely confused.
If that same child insists that he's black, even though both of his biological parents are white, would you take him at his word or save him from getting Dolezal'ed by an unforgiving woke mob?
Children don't make good decisions. Their brains are literally missing the hardware until about age 25. [1] We don't allow them to make permanent changes that they might regret.