Well, yes and no. The test is to demonstrate harm, and the onus is on the group stating that the documents shouldn't be released. With respect to national security agencies, the test is one of national security and whether that would be prejudiced.
This test will be fine-tuned for the needs of a public broadcaster, and will specifically be about whether their independence will be compromised with respect to their journalistic, competitive, or programming activities. It will be specific to what they do; they're not involved in national security like CSIS is.