This conspiracy theory really angers me, like almost on a personal level. I've actually cut all ties to a friend who started spreading it on FB. I first tried to show them how insane it is and thought I'd succeeded, but they seemed to continue to feed off of antivaxxer propaganda and soon began sharing that crap again. After a second attempt I just gave up.
That has several reasons. I will explain why your approach didn't work.
1: (source) Social media is doing reinforcement learning on their "lab rats". This is true for all the social media platforms. It's not like you read one fake news article, you see them non-stop: your world becomes fake news. Just like how YouTube keeps playing the same type of content. Facebook and Twitter do the same thing. Good for engagement ($), not good for society.
2: (psychology) The way the human belief system works, is to try to find evidence in favor of your own beliefs (not against). Social media reinforces your existing belief system: your political, religious but also conspiracy beliefs. Our ego doesn't like to be wrong, we like to be right (see heated debated about adults discussing religion for example). Humans aren't particular open-minded by nature, this sometimes includes scientists. This is human psychology at work.
3: (state sponsored, large budget) There are large botnets spreading fake news: including deep fakes, bogus scientific articles, using famous figures etc. It's very sophisticated psychological warfare: a day-time job for many. For instance, the son of President Kennedy made a speech about mass surveillance (facts), but in doing so he supported the whole conspiracy scene. But AI botnets spreading fake news is something many governments do. Like all mass media news, it plays on the sub-conscious level (fear), not the logical level. The entire goal of media (news) is to manipulate, not inform. Social media is just better at manipulation.
4: (propaganda effect) Like any propaganda, it's mixed with reality: stories of Epstein, Bill Clinton, Climate Change etc. This makes it more difficult to disprove a story.
4: (the effect) For any system (including the human brain): garbage in, garbage out. Watch this junk to long, and you start to become crazy yourself. Yes, even you yourself can be manipulated by social media + AI botnets. In fact, entire countries are manipulated using social media (cambridge analytica didn't stop it, see: https://news.ycombinator.com/item?id=24474343 ).
5: (why) From Zen Tsu quote "The supreme art of war is to subdue the enemy without fighting."
Think about it: Who benefits from "defund the police", "overthrow the government", riots in the street, "bill gates wants to kill the world" etc ?
The technique is called subversion and was designed in the Soviet Union. You can watch the historic presentations by Yuri Bezmenov: https://www.youtube.com/watch?v=yErKTVdETpw
Subversion didn't stop, it just evolved into the digital sphere. Now combined with AI and reinforcement machines (social networks).
Probably this answer could have been shorter, but I'm to tired to write fewer words.
