Because IMO, we have created a world where we are rewarding the numbers game and social media has adapted and positioned itself to contribute to that.
In the old days marketing used to be a call to action, you were rewarded as an ambassador of a brand because your message reached people and that was quantifiable. Now its a pure numbers game, brands are paying idiots who use their platforms to terrorise people because the engagement is incredible numbers. Thats before the platforms give money for it regardless of the content.
If you look at it in football terms, thats why 99.9% of content now is not old players giving opinions or analysis of games, its because they know if they get Rory Jennings on a Sky programme to say that he thinks Frank Sinclair is the best PL CB of all time then their engagement with idiots will spike through the roof.
Add to it this whole idea that wanting accuracy is against free speech, its become a race to the bottom all this stuff, it all goes hand in hand