Can we just have a blanket policy that these kind of questions get automatically taken down, even if phrased as a 'hypothetical?'

We shouldn't.

I personally distrust and altogether skip questions related to child pornography and sex involving minors. I sense those questions to be some people's attempt to know their way around a topic that is plain repugnant. But implementing a blanket policy for this could start up a spiral of blanket policies for truly edifying topics.

If you perceive someone "is frantically asking [...] about what the exposure is", tipping Law Enforcement would be more effective.

Can we just have a blanket policy that these kind of questions get automatically taken down, even if phrased as a 'hypothetical?'

We shouldn't.

I personally distrust and altogether skip questions related to child pornography and sex involving minors. I sense those questions to be some people's attempt to know their way around a topic that is plain repugnant. But implementing a blanket policy for this could start up a spiral of automated blanket policies for truly edifying topics.

If you perceive someone "is frantically asking [...] about what the exposure is", tipping Law Enforcement would be more effective.