You're correct of course. The results of the case are only
justifiable because the law says so. Laws can be changed, but
until then, it stands as it stands.
But I agree with you. I would go so far to say that rights
should not be age-based but power-based/authority-based ... and
maybe even brain-scan based (as improvements to fMRI continue)
but I dont' think we have the proper metrics for such a system
yet. Perhaps far off into the future.