It is a personal account, as that is her personal name, -and- she is the President. Both things can be true. Stephen King uses his personal profile in a casual format with quips and jokes, random posts about the weather, what he’s doing today, retooting fan art, and correcting idiots; because that’s what he wants to share, just like I do with my profile. Yes, he has to be mindful of what he posts because the internet never forgets; and so do I. My posts can have real world repercussions for my job, or business just like King or Whittaker. The only difference is viewership.

Regardless, if I accommodate your argument and focus on posts from “official” accounts, Wendy’s has used their accounts to troll for at least a decade. They have established informal engagement as a legitimate customer engagement strategy and it has been adopted by marketing teams the world over. Whittaker’s interaction has garnered hundreds of comments in this niche thread alone: hundreds of impressions of the Signal brand. You are arguably the only user who negatively responded to her. From a branding perspective, those are phenomenal Results.