Look this training isn't only about telling adults what they should know already... it's also about training people on what the warning signs of harassment and abuse are, how to make reports, etc etc.
This type of training has changed drastically over the past 10 years, and continues to evolve. Everyone in any major organization should undergo this training every few years. In fact, many insurance agencies are requiring it now.
Increased training is how we avoid future Harvey Weinsteins, Catholic Church, Penn State situations.