The difference being that along with the internet spread of fake conspiracy theories, comes the internet ability to quickly Google up the source and check. Wikipedia etc, mean there's no need to go to the library and run down documents; it takes only a few minutes, sometimes only a few seconds. Laziness. Thinking isn't easy, it's hard, because it takes a bit of effort, imo. But as you say, there's also a willingness and a need to believe what we want to believe.