> It doesnt matter if the truth is right in front of them, they will find a way to dismiss it.
Pretty much everyone works this way. It's not a left/right thing. If you show someone's beliefs to be false, they are more likely to believe those false beliefs than if you had said nothing.
Right wingers are also the flat earthers of economics, the only difference is they believe in different things than the ones on the left.
>actually common sense do apply for economics
Actually no because there's no such thing as common sense. We don't have common sense, we have intuition. We develop intuition through experiences. And that intuition has a bias towards the things we've experienced, and is often wrong about the things we haven't experienced. Everyone has a different intuition, as everyone has had different experiences.
Simple things like "do not spend more than your income", "if you go in debt make sure your debt is low and can be repaid", "if you go in debt make sure most of it is related to capital investments that can generate income in the future", "do not create more than required monetary inflation as it tax the poor and creates inequality" should be common sense for everyone.
Just because some nuts think the earth is flat does not mean they should be taken serious or their "common sense view" of the shape of the universe should be taken into account. It is simply wrong. Yet a lot of people still defends it.