Painting this as a "gossip" app seems extraordinarily reductive. Women have a good incentive to share info about and to one another for safety beyond "gossip."
But then again, can't convince people as a whole that men are, on average, good and decent people with normal flaws just like women, and therefore deserve to be protected, loved, and appreciated equally.
This app operates just like an app some creep online would use, people post pictures (permission or not) and gossip about them.
There are plenty of examples of people making things up about other people who they thought wronged them. Mob justice is really disgusting, and that's all this site is. People justify horribly vindictive behavior when they think they're righting a perceived wrong.