> if you don't know, why does one assumes it was innocent
This is the same standard the US legal system uses, for one. "Innocent until proven guilty."
In the case of my comment I thought that it is easy to point out misdeeds but we cannot be overconfident in our own ability to prevent them under exceptional circumstances. If you were given money by a Weinstein or an Epstein, we all hope we could have the good sense to do the right thing. But how much is that actually the case? None of us are actually in that situation; few of us have been tested in this way. We could also be conned by these types. It is instructive to take a step back and understand that part. Perhaps this would help us be more vigilant should the situation actually arise.
The final point I would make. It breaks down a bit for supervillains like an Epstein. But for lesser transgressions, such as those I have seen in my own life, I can say that I used to spend a lot more time questioning people's motives, and indeed labelling people as psychopaths, sociopaths, and narcissists at a distance. Eventually I came to a realization that mentally maintaining these labels and reacting to them was a big stress on me and source of anxiety. It may sound radical, I would argue that thinking better of people by default will lead you to better mental health. But I have not figured out how this policy may apply to an Epstein, Ito, Weinstein, Hitler, etc. Thankfully I think such supervillains are a minority.