Who fact checks the fact checkers?
Having said that, I'm skeptical that this will be a force for overall good. I can already imagine ways in which this will be abused.
This seems like the common-sense approach, but who knows how long a proper "review" would take place and how much damage would be done (e.g. thousands or millions being improperly informed by a supposedly reliable service) in the meantime.
I am also highly skeptical of this effort, which essentially amounts to Google and a few parties trying to automate critical thinking skills.
Result: Most people won't even see the debunking.
Churchill had a great quote here:
"A lie gets halfway around the world before the truth has a chance to get its pants on."
Although certainly not perfect, I'd say Wikipedia does an excellent job doing just this. And at the beginning, everybody said something like Wikipedia would be impossible.
Also at the bottom of the article it links to this site. https://reporterslab.org/fact-checking/