Exactly.

People like easy solutions to complex problems. If you don't see the problems, it's easy to assume they don't exist, but what actually happens is that by banning things, you just push them underground, where they fester. Alcohol prohibition created the mafia, which caused so many more problems than alcohol ever did, and it's still around today. Banning drugs seems to have created, or at least strengthened, the drug cartels. I wouldn't be surprised if strict controls around CSAM actually ends up harming more kids as people who would be casual observers end up getting caught up in the worst of it and end up actually harming children. I'm not saying CSAM should be legal or anything like that, I'm just saying the strict censorship of anything close to it is more likely to push someone who is casually interested to go and find it. The more strictly something is controlled, the more valuable it is for the person who controls it.

In other words, it's the Streisand Effect, but for crime.

No, what we need is better education and better (not more) policing.