I am inclined to agree with you, but I have several reservations about some of the consumption tax proposals:
First, the level of federal spending is much too high, regardless of how the taxes are collected.
Second, I would consider a national consumption tax only if all forms of the income tax were killed and buried forever. This would undoubtedly require a constitutional amendment. If this is not done, we could end up with both kinds of taxes.
Third, sale taxes are considered "regressive," which have led some to propose some kind of rebate to make the taxes more "progressive." This would create another messy bureaucracy, and would tempt politicians to tinker further with the tax code.
The income tax would have to be terminated, perhaps a constitutional amendment would do the trick, unless it was repealed as in the past.