So when Tucker says that it's a freeing experience to not have to lie anymore, he means that it's a freeing experience to stop pretending that he doesn't want to go back to the world that Lee Atwater was describing in 1954. This is what he means when he says that it's important to tell the truth. For him, the truth is that the world should be run entirely by and for white heterosexual Christian men. Telling the truth isn't about actually telling the truth, damn the consequences, because in that very clip he... Clearly says that he's fine with lying if it helps him evade responsibility for the bad things that he does. Honesty doesn't mean honesty here. It means adherence to a particular worldview. It's exhausting to be a bigot and pretend that you're not for the sake of respectability. And you don't have to. That's what he's saying.