hi buddy
I wasnt sure @hatu if you were serious in your previous post. I think blockchain will not be a solution here. It may actually help spread fake news (lack of censorship and since nothing in blockchain can be removed).
We have trouble realizing if written online news is real or fake. All mentioned by you solutions will only help small group of people. Most may end up being vulnerable. Dont you think?
Can you imagine that right now AI could already create 'fake' video of your favourite influencer in which he would make some fake statements, which could affect your financial decisions.
I hope I can spend my old days living in some remote 3rd world country, disconnected and off-line. Far from all upcoming mess.
Yours
Piotr