The judge's responsibility is to deal with matters brought to his / her court and rule on them according to written law.
My guess is the concept that a minor under 14 cannot consent to sexual relations is intended to prevent a defence by a pedophile claiming that it WAS consentual on tha part of the juvinile. It is a legal situation set by the legislature, not the judge.
The judge may refuse to hear the case by excusing himself but it will simply go to another judge. Refusal to hear cases may also be grounds for removal of the judge from the bench. Again, they are not responsible for the content of the law. They ARE responsible to hear the cases brought before them.
My question in this case is not regarding the juviniles. My question is what about the responsibility of the parents of each of the kids.