Why have conspiracy theories become almost normalized and expected with any political move?

Conspiracy theories used to be looked at as almost insanity. It was like that one guy on the internet who swore he has written documents between Bush and Osama planning 911. But nowadays seems like eevyone and their mother believes at least something completely outlandish the goverment is doing. Facebook is joked about for being like a breeding ground for conspiracies because so many people believe just about anything.

I know conspiracy theorists have been around since forever, but I feel like there's been a huge influx of people believing them more than ever, and for just about everything

Edit: I know some conspiracy theories are true. I'm sorry if my post made it sound like I was denying the claims of any conspiracies