The EFF's proposed fact checking alternative isn't even that good. Let's suppose someone makes a post debunking an American myth like sex trafficking statistics. A small group of people might decide to "correct" that.
I get it. No one wants Zuckerberg to be the arbiter of truth, and demoting content based on the say of a random third party org can be problematic. It would also always be a point of friction and contention, particularly when a fact check is considered to be inaccurate.
In that light, it is tempting to promote something like this as a superior avenue to go down (or largely in part), however, this too has it's issues.