You're thinking about it backwards.
The ones without confidence are the ones who get metoo'ed, not because of what they did or didn't do, or may have done, but because they don't keep their receipts or defend themselves. They just voluntarily climb onto the pyre which makes them convenient and easy targets. Entirely different group than actual sexual predators, who if anything are over-confident in their social networks, and rogue's galleries of connections, enablers, and accomplices.
It took thirty years for Harvey Weinstein to go down, and he only went down because the people in his sex trafficking and defense network turned him out to save themselves.