I'm an advocate of safe injection sites, so I will agree somewhat here. Safe injection sites work because they identify addicts and aggressively supply them with resources to counteract the need for the addiction in the first place, all while encouraging less and less use. This is an approach that could have merit for pedophiles, but there are some issues that pop up with it as well that are unique- to consume a drug, the drug must enter the body somehow, where it is metabolized.

CSAM on the other hand, is taken in simply by looking at it. There is no "gloves on" approach to generating or handing the content without absorbing it- the best that can be hoped for is have it generated by someone completely 'immune' to it, which raises questions about how "sexy" they could make the content- if it doesn't "scratch the itch" the addicts will simply turn back to the real stuff.

There is a slim argument to be made that you could actually create MORE pedophiles through classical conditioning by exposing nonpedophilic people to erotic content paired with what looks like children. You could of course have it produced and handled by recovering/in treatment pedophiles, but that sounds like it defeats the point of limited access entirely and is therefore still bad, at least to the ones in charge of distribution.

Additionally, digital content isn't destroyed upon consumption like a drug, and you have a more minor but still real problem of content diversion, where content made for the program is spread to those not getting the help that was meant to be paired with it. This is an issue, of course, but could be rationalized as worth it so long as at least some pedophiles were being treated.