IMO Joe and his “team” probably know exactly what’s on the hard drive.
Yes, but they don’t know what’s going to be made public, next. It sounds like there is plenty of stuff there, to be dripped out, a little each day.
They probably have a very good idea of the financial crimes and treason, because they’re all parties to them and have their parts of the email chains. The other stuff, like massive kiddie porn, they probably fear and expect but don’t know its nature and extent.