Usually we change views in many very small steps, slowly turning from one direction to another. Also sometimes when confronted with a paradox in our existing model of the world that invalidates our previous believes, but that's extremely stressful event and also rare... fake news can't do that to you. They just push the buttons that already exist. I'll never buy a fake news promoting say anti-vaxxers' ideas, but give me something that proves something I already believe in and I'll be sharing it all over (ok, not, by now I've learned to be careful, but I'll have a strong impulse to do it)