Oh, it's a still thing, it usually happens when you submit a complaint against your boss to HR, are assured that it will be confidential, and next thing you know, your boss is retaliating against you, because of course the first thing HR does is to go to him, and the first thing he does is to hit you back.
Happens all the time, FAANG firms are constantly getting in trouble for it.
One difference between a courtroom and a workroom, is that a boss can often ruin his accuser's life in the latter. The justice system works because it treats all people as equal. In the workplace, you are not the equal of your manager.
Fortunately, you can always escalate your complaint into a courtroom. Unfortunately, proving retaliation is next to impossible.