That doesn't mean she was right to make the post obviously, I just don't think it was any sort of active ploy on her part. I don't even think the anger was fake, from her or most of the initial responders. As it propagated maybe the outrage was more manufactured, but believe me I know people that felt just as heated as she did at the time, only expressed it in private chats. In some cases these were chats with just a handful of friends that had a spectrum of opinions on the issue, so no reason for it to be posturing.
I hate cancel culture, and I understand feeling like some instances are very manufactured. But I feel it is more dangerous when it is organic, because it is very hard to deal with legitimate human emotions. I think usually when the organic mobs misfire it is a "straw breaking the camel's back" type situation: some minor offender becomes the target of pent up rage from a larger issue, and the punishment ends up being way disproportionate for the one, while many others get off scot-free.
A lot of people who do the later actually have unresolved trauma issues. It's just harder for people to empathize with them because of their behaviour. The claim in psychology is that narcissistic people are actually using that to protect a deeply fragile ego. But then maybe psychologists just want to say everyone suffers from the same thing. We'd all be peace loving, sharing, commie hippies by default if nobody screwed us up ;-)