Banning politicians from using Twitter is not a free speech issue, it’s the opposite because twitter can decide who is allowed on the platform or not if they want to support that, they can resign. In my opinion having a public forum where free speech that is within the boundaries of the law is protected is preferable to a private entity controlling discourse with no legal recourse. FBI and other three letter agencies are a problem because they are unaccountable due to their secrecy. A public forum would be just that open and accountable where the exchange of ideas can happen freely