The next step is to fight the idea of "illegal content". Bits are just bits, some just upset the elites, just like nipples.

And some of it is child porn. Does that only upset the elites?

Child porn is the emotional argument, the only possible case where most people might agree that some content can be illegal. A more representative scenario is illegal copies of music or a political pamphlet in China.

Sorry, how is child porn only an appeal to emotion?

Never said it was "only" an appeal to emotion, just that it's not representative. It's meant to stop discussion before it starts.

A question that you can’t answer isn’t the same as one meant to shut down discussion

Open questions :

1) If childporn was not banned, how many people would consume that content anyway?

2) What about hyper-photorealistic childporn movies with fictional characters and future rendering technologies? How will you tell the video is true or not and worth to be removed?

Technological progress will not stop because some people abuse the technology.

That's the biggest risk of permissionless / decentralized -- you learn quickly why permissioning and centralization are important.

Can you provide some of the reasons?

Otherwise encrypted illegal content is stored on everyone's computers, and technically makes them potential felons. And thanks to the magic of the blockchain, it's indelibly recorded forever.

What’s to stop a hacker from planting such content on your computer?

Infosec usually, the difference here is you're taking on the risk and data knowingly and willfully. "Officer, it's part of a blockchain thing called Sia" is unlikely to satiate them.