Why would you compare a dentist's qualifications to some random thing that the media says is or is not going in the world? If you want to make such a comparison you use first or third party sources that you perceive to trust. Your perception is different from others. Therefore, you will have certain bias or non-bias that you would have against said dentist or media. So really its all relative. I feel another good comparison is to say the fact-checkers are like ADs or salespeople trying to sell your mind on select information. The question is will you click on or buy the information or will you look elsewhere for your product or service but for the fact checkers or the media YOU are the product.
It's a question of evidence. Advertisers and salespeople are experts at deception and misdirection, of course, that's a key component of the job. This is entirely separate from fact-checking. Fact-checking is evidence-based. If you visit a 'fact checking' website, and it says 'we've fact-checked this statement, and it's false'... but they don't provide any evidence to support this assertion, then this is not fact-checking. Fact-checking involves gathering data to determine whether or not a claim is true. A 'fact-checker' that provides no data, and that provides no links to its sources, is not a fact-checker.
What does Facebook fact checks have anything to do with this?
You are arguing with a democrat bot. Why are you wasting your time?
I don't vote Democrat. You should do some fact-checking.
I am not suggesting that everyone who works for Facebook is utterly impartial and does not let personal opinion affect their judgement. But many of the threads in P&S start with someone posting some debunked crap from a shared FB post. Over and over again I provide the data to refute their baseless copy-paste nonsense, but they are usually unable or unwilling to engage for some reason.
You can try to politicise it if you want, but here's some fact-checking:
Trump came out with over 30,000 false or misleading claims during his single term in office. Any mechanism that attempts to staunch the flow of sewage is a good thing. It may be imperfect, but it's an improvement. Self-policing of a global social media platform is a separate and much broader issue. But FB has some self-interest here, the stuff they will most want to block is stuff that will get them into legal trouble, i.e. spreading lies.