So far the GOP rhetoric against it has been so ignorant like rising crime despite crime rising everywhere else, population requirements despite already passing two states in population, or the idea that there is no car dealership in which there is one. It clear they have no messaging strategy for the public sphere or in the courts other than "if DC is made a state it will elect Democrats". Right now the only thing Republicans have to hang on to is Manchin. The fact that he hasn't definitely come out against statehood other than joking that he supports adding DC to WV suggests his position is not enough to secure Republicans' nervousness.
No car dealership? What? We would all be much better off if we eliminated the dealership model and just bought directly from the manufacturer and cut out all the scammers and artificial price increases they come with.