Trust is lost when trust is abused. Mistakes, even if made unintentionally are something that should make reasonable people be skeptical of any further dealings with someone.

This is not their first mistake.

I should try to rob a bank and if I get caught just return the money. No, there needs to be a penalty above what you get, otherwise it encourages people to take the free option of bad behavior. If they get caught they go back as though nothing happened and if they don’t they get a bunch of traces / data.

That's not FUD though, they literally did that. Once trust is lost you don't just get it back. It takes a very long time to rebuild that.