Yarvin has crank tendencies that show up in Urbit, but the ones that do show up have less to do with his politics and more to do with his penchant for obscurantism. He wants to be seen as a thought leader, in politics, computing, and elsewhere, but both the ideas in Urbit and his political ideas are either relatively straightforward to someone learned in the art, or highly objectionable. So they are wrapped in matryoshka-doll nestings of obscure notation with the promise "Just accept it for now, it'll all make sense in the end."