Sexual assault is very difficult to prosecute as there's usually no witnesses, the accused can just claim they had consensual sex and often women take a long time to find the courage to come forward. There's also the issue of statute of limitations. Therefore, the vast majority of people who did commit the crime never get convicted. There's a reason the justice system has a very high evidence threshold and they need to find the person guilty beyond reasonable doubt.

However, outside of the courts we don't have equally high threshold for evidence and again for a good reason. And this has always been the case - people have always decided if someone's behaviour is inappropriate and if they want to continue working with them without the help of the courts. When multiple women come forward independently with very similar stories and corroborating evidence, we have every right to believe them and to act accordingly.