The difference is that you are much more likely to get prosecuted or at least deplatformed for hosting something illegal like malware or csam than a leaked cable.
It is not just law enforcement involved here - it's also platforms' terms of service.
There is no legal precedent for this yet, but what happens if some litigious person in the mold of Craig Wright tries to sue users he/she doesn't like with this pretense?
It's just an example that i remember right away, there are all kinds of data stored on Bitcoin even since a decade ago[1]. Should i mention that research from few years ago discover some kind of content including hundreds link to child porn[2]? Should i also mention shortly after Ordinal launch, someone use it to add porn/explicit image[
23]?
If you run non-pruned Bitcoin full node, your device already store such data.
[1]
https://www.righto.com/2014/02/ascii-bernanke-wikileaks-photographs.html#ref14[2]
https://fc18.ifca.ai/preproceedings/6.pdf, section 4.3 Investigating Blockchain Files.
[3]
https://crypto.news/bitcoin-ordinals-encounters-explicit-images-days-after-launch/