$50,000 is probably lower than the cost of going through trial and winning.
No, it's not.
The non-disclosure also benefits the person making the complaint. I can assure you that many companies will hesitate if not flat refuse to hire a person making a sexual harassment complaint in a previous job simply because the potential employer has no way of knowing whether the complaint is legitimate or if the woman is a troublemaker. Why hire a potential problem?
I can also tell you both as a legal assistant that spent 17 years in the field and as an adult woman who went back to college for a degree and moved into a male-dominated field that 99.9% per all "sexual harassment" complaints are made (sadly) by women gaming the system. Working in two male dominated fields I dealt with a number of "offers" without ever having to resort to either HR or physical violence. I also learned how to read a man's actions and respond accordingly to keep our relationship at the proper temperature.
Truthfully, I think it's pretty sad that young ladies are not educated to understand the power of their femininity. It seems to me that they are taught to regard the males in a hostile manner. For the most part, if you appeal to a man's finer qualities, he will respond in a positive way (not always, but mostly).