Isn't this only true if the company still pays payroll tax? If they don't pay the payroll tax anymore why would they have to cut your salary?
They don't have to cut salary. But when fair taxers claim prices will drop 20%, they are assuming that salaries are cut. And this has been confirmed by the fair tax modeler who did their research, and Boortz acknowledged it too.
Why wouldn't they still have to pay payroll taxes?