A primary qualification of being an 10x politician is to be able to look citizen voters in the eye and sincerely lie right to their faces without any compunction.
They don't "lie", that would entail thinking about the truth and then speaking differently. What might be true or false never crosses their minds.
Whenever some specific belief is challenged by external conditions (poor polling, disagreement with wealthy donors, etc), they just go through long doublethink processes multiple times with their advisors, until they're persuaded that changing their position is the best thing to do. Once they believe what they say, they simply sell it like only Real Believers could.
I'm sorry, but I truly believe that not only is this view utterly naive but apologist as well, and I simply think it tries to blot the sun with its thumb.