The question is how.
One vague idea I've had is a system based on a web of trust [0], as used in PGP. We could bring back key signing parties and build a protocol that filters content by trust levels.
Just throwing stuff out there. Maybe anyone has a better idea?
[0] https://en.wikipedia.org/wiki/Web_of_trust
Have you seen Reddit lately?
I haven't.
Link to examples?
The way to back off from that chaos is to ensure you are consuming content from people you trust, like neighbors and family. Another option is to self-host media.