The explosive sellers that provide explosives to someone without a certification (child or adult) get in trouble (in this part of the world) .. regardless of whether someone gets hurt (although that's an upscale).

If sellers provide ExPo to certified parents and children get access .. that's on the parents.

In that analagy of yours, if grok provided ExPo or CSAM to children .. that's a grok problem,

(Ditto drugs).

It's on the provider to children. ie Grok.