Sure they're required to do an investigation, but lacking clear evidence and the proper means to obtain clear evidence( as per the last sentence in the article candidly stated ) taking action, however well intentioned,  put's them in a precarious position if it is a “he said, she said” (typical) kind of situation. It's a societal issue that's been dumped on higher-ed because they take federal dollars via a law originally designed to prevent sexual discrimination in athletics has been bloated( as happens to so many federal laws). I think we're going in circles here, there's nothing more for me to add.