You have to admire the effectiveness of MSM propaganda. The person who invented the concept of "The Big Lie" would be very proud. You can get a lot of people to believe just about anything if you make the lie big enough and repeat it loud enough and long enough. Actual facts have no bearing on this equation. People repeat talking points with the firm belief that they are true without ever having taken the time to find out if they are actually true. Gullibility is a common human trait.
Or as the old P.T. Barnum saying goes, there's a sucker born every minute.