All that do your own research was really bad for society.
This is the type of stuff I find most frustrating:
https://www.audubon.org/news/no-5g-radio-waves-do-not-kill-birds
Where idiotic conspiracy theories these anti-vax and similar types pollute the place with via the platforms of those tech creeps (YouTube, Facebook etc) - they serve as red herrings distracting from the real challenges facing earth. And further allow pro rubbish industry lobbying groups to paint all activists, critics or complainants as kooks.
Further, you have to identify not just the right actors, but also the specific mo. No doubt Russian, Chinese and some of those sleazy Israeli software groups are destroying reality. But based on some things I suspect widespread political ransomware is the mo rather than anything as hazy as influence, a concept I am suspicious of. I dont think humans are actually that malleable. The Facebook emotion contagion study struck me as the usual humblebrag. They pollute the place and destroy info. That is real. But as the op pointed out a 50 year war on critical thinking and the sane parts of the human gut instinct, being swayed by random events rather than having a consistent worldview, each part of which interlocks with other parts, seems expected.
(Housekeeping note: I am a bit repetitious with my favorite pieces/points from over the years not because I am demented but having now dealt with a foul sledgehammer and trickle across infonomics style I loathe, I am okay with savagely meting it out deliberately finally..damn dolts think I am the one who needs dimwitted tests..I will show the lying bastards..)