Some people are very good at that.
I don't even think they're trying to be good at lying any more. It's all, "We're going to totally bullish*t you, gaslight you, not even try to sound convincing. We're lying. You know we're lying. We know you know we're lying because the lies we're telling are so preposterous but half of you are going to believe them anyways because it's what you want to hear."