I'm not saying they aren't libertarian, just that they hold on to inconsistencies that are not libertarian. How many inconsistencies can a person hold and still be what they claim to be? How many statist beliefs can a person support before others laugh at their insistence that they put liberty first?
In mild cases it would be like someone claiming to be a Christian, but worshiping the Flying Spaghetti Monster on the first Tuesday of each month. (Substitute the belief systems of your choice.)
In the worst cases it would be like someone claiming to be Christian, but instead worshiping the Flying Spaghetti Monster all the time, with occasional nods to the God they claim to worship- as long as it's convenient and doesn't get in the way of their normal worshiping routine or threaten their belief in FSM.
It is certainly bewildering.