Suppose we say that the legal system needs to have 95% probability of guilt to render a guilty verdict, and its associated consequences such as imprisonment and/or restitution. A high threshold makes sense for such systems (https://en.wikipedia.org/wiki/Blackstone%27s_ratio).
Suppose, for the sake of argument, that you have a person for whom you have 80% probability of their guilt. That, then, is not enough to render a guilty verdict; 20% is clearly "reasonable doubt".
80% probability of guilt, however, is absolutely enough for reasonable people to say "I don't want this person associated with my organization", or "I don't want this person presenting at my conference".
This, among many other reasons, is a very good reason for organizations to have their own standards which are independent of those of the legal system.