Ironic counterpoint: I now notice that the deactivation itself is 'newsworthy' and has been picked up by Reuters et al. Does this mean that this particular employee is now exempt from sacking or other disciplinary measures because what he/she did was 'newsworthy'?

What a tangled (inter)web we have weaved...

Obama wasn't setting policy or doing "diplomacy" on Twitter. If he were, I'd say the same thing. People asking for Twitter to ban Trump aren't all doing it because of their political "side" -- his use of the platform is harmful on its own.

Many people are fine with banning Nazi sympathizers, posters of ISIS propaganda, and many were fine with the banning of Milo Yiannopoulos. Those prove that banning of political rivals is fine on Twitter. It's just a matter of where they draw the line, and whether or not they're willing to face the consequences of doing so.