More or less. Unless it's something to do with the employee's privacy or something to that effect. Doesn't mean the criminals are the good guys here, since they're trying to make bank on it instead of releasing it to the public -- if it's something that the public has an interest in.
No, not really. The science products eventually become public (after 1st access right by contributing nations). But why would the API keys (for instance) ever be public?
Terraform files? Seems waste of time to have to make it public.