I think that would be due to what information people share on social media and what she can take advantage of. For instance certain professions are more likely to list their jobs on Facebook etc as the use it for networking (nurses, teachers, all tend to follow each other from where they work, so they tag themselves in on the employment page.) Though if she uncovered someone who uses SM for a hobby etc she's got very little to bully them with, so she wouldn't shout them out.Has anyone noticed that all these trolls she catches have what one would class as a job that requires integrity. They are always teachers and NHS workers never just Maureen from down the local launderette type thing.
It's a skewed attempt to display power because 9/10 employers won't care anyway.