They claim machine learning, but I'd guess their workhorse is a "grep -f badwords tweets.json | makepdf | send boss@employer" kind of thingy.
E.G the "BIG DICK ENERGY" post being flagged as bigotry and sexism, no doubt they trained on limited data of hand curated "questionable posts" and I wouldn't be surprised if they used a source like 4chan and just automatically assigned negative labels to the vast majority of posts.
In fact, considering the moral hazard, I don't even see how even using an AI, even as simple as "grep", helping that psychologist in the cost-minimization contexts of a private company would not result in an unacceptable slippery slope where the psychologist would end up just rubber-stamping the decisions of the AI and its creator ? Maybe someone with a dual data "science" / psychology degree would be acceptable, but I'm guessing he/she wouldn't be able to use any "black box" AI...
However, in what is probably not just a coincidence, the global issue this is only one facet of is about the information asymmetry between citizens and corporations...