I believe this is a legitimate concern. Not just for child porn people. It's for anything.

Suddenly you have a tool anyone can use to upload any kind of sensitive material that no court in the whole world can take down.

You can't censor this either because that would be against bitcoin's decentralization policy. You can't have some kidn of central police that checks files uploaded to the blockchain.

So let's say some dude wants to have revenge on his ex, he can just upload nudes of her onto the bitcoin blockchain, and suddenly no one can take it down.

I think we should just hard fork or soft fork to disallow any kind of extraneous data on the blockchain, it should just be transactions.