As far as I know he can still address the people. Presidents were able to before Facebook was invented.

Newspapers feel they have an obligation to report what our representatives say, good or bad, but they also have editorials that comment on that reporting. In some cases (like The Economist) reporting and commentary are mixed together. Most newspapers believe their editorials, and how they report the news are critical to holding government accountable, and one of their missions.

I see flagging messages and banning as Twitter (and really all online platforms) version of an editorial.