If you could reliably read data after 6 passes then HDDs would be 6 times larger with the same hardware. There is the further belief that state sponsored actor

If you could reliably read data after 6 passes then HDDs would be 6 times larger with the same hardware. There is the further belief that state sponsored actors would be able to read them, but this relies that state sponsored actors 1) have hardware capable and 2) would only go to those lengths to get the data.