I don't believe in a lot of conspiracy theories, and most are just too silly to even entertain, but I do believe that social media is being data mined by various government programs and not just limited to the United States. I believe that social media posts and activity can be used as blackmail if a person were to ever become a "problem" in the world.
I also believe in psyops to a certain degree. Occasionally, a wifi hotspot will be named "FBIWATCHINGYOU" in my neighborhood and it's a very interesting thought to entertain, but it's much more likely that someone on my road is playing a prank.