Don't people understand that you're hearing this "fake news" meme every day because the dying corporate mainstream media industry is trying to discredit the independent media competition who is eating their lunch? Breitbart, Drudge, Infowars, and hundreds of smaller media outlets, YouTube Channels, Twitter accounts, and the like in many cases are getting as much or more attention than the old media and siphoning off clicks and ad revenue.
The dying old guard is fighting for its life and trying to use its last gasping breath to put in place social media policies, social engineering, search engine manipulation, and technical solutions to try and smother their competition.
The more that we outsource higher order thinking to machines (and badly I might add), the worse this problem will get.
We should be finding better ways to get more readers to think critically.
I don't this this is a tech-solve, but rather a human one.
I think the root of the problem is that attention equals money and you get the most attention with shocking news or extreme viewpoints. There are some media types less dependent on money, which seem to work better. I think we should think about ways to expand their audience.
So, my answer is I don't stop it because this is modern day book burning, nothing else.