To be clear, I recognize that there is zero chance of genuine effective age-appropriate sex education being mandated in the foreseeable future in the US, nor has there been any such chance at any time in the past. I'm merely noting some of the things that would actually be helpful measures in combating CSA if it were possible to implement them.

You're absolutely right that, even if such a mandate had already existed, it would've been erased or co-opted by right-wing groups by now.