Ooh! A woman who has decided she has no fucks left to give. And see how scathing and amusing but above how very, very clear and readable she is!
The withering tone can not be surprising given how she has been treated, how her career, ability to earn a living was deliberately targetted.
As for it being an ad hom attack - well, you live by the sword you can only expect that eventually, you'll die by the sword. Someone somewhere will just think "Fuck it!" and have back at you.
Tough.