I believe it will be helpful we keep developing fact-checking tools with AI. But the video side... It's scary. The implications there can be once AI keeps generating more and more fake videos from famous/important people are tremendous...
I have not yet seen AI doing fact checking, so AI cannot "fix" fake news.
AI is fake news
Ai, ai, ai! Color me cynical, but I think the malefactors will overtake the good samaritans of the AI-journalistic complex...