I read section 230 and mentioned parts of it that I think are relevant to impartiality. In particular, I don't see how you maximize user control over the information they receive if information providers are going to be partial to one political party. And I don't see how you have forums for a true diversity of political discourse if forums are going to be partial to one political party.
If you can tell me, I would love to know, how do Twitter's actions in this case maximize user control over the information they receive? I don't think they do, I think it is quite the opposite of that, but go ahead and make a case if you have one.
Now it is true that the implementation of section 230 lacks an enforcement mechanism to enforce the policies that it advocates. That's a problem with the law, and it is what some people are advocating that we fix. I agree with those proposals, I would like to see section 230 amended so that companies that don't maximize user control over the information they receive lost section 230 protections. And the same thing for companies that don't allow a true diversity of political discourse.