A zero-knowledge database like that is guaranteed to have no method of oversight and likewise to be immediately gamed and trolled by anyone with a grudge about anyone.
It's unclear how this would work, given the thoughtful way the project has implemented it.
It’s very simple. Person registers a name then receives notification that others have registered the same name, then conflates that with evidence of guilt in the same exact manner the articles does.
All you need is someone's social media handle to silently accuse them of some sexual offense without need for proof or evidence. So a few dozen women could coordinate an attack on Elon Musk or basically anyone they want who they know on social media.
But.. If they choose they can do this without this tool - and this does nothing to make that easier or to amplify them.
All it does is get a lawyer to contact them - which is something they could do already if they are making something up.