There is NO difference at all between CSAM on a hard drive and CSAM via Core30's data storage mechanism. And you're ignoring the whole distribution part. And yes, they are accessible by non-techies.
The goal is not to stop motivated individuals from accessing the images. The goal is to not be in possession or distributing them myself just by running a node.
And we don't have to restrict specific data - we just ban *all* data storage.
By the time there are arrests, it is way too late. Once CSAM is on the chain, it can never be removed.