Why Were FBI/DoJ Texts Ever Redacted?

I'll keep this brief, because the in depth version can be read at Jeff Carlson' excellent blog: Why Did the DOJ Redact Text Messages Sent by FBI Employees Strzok and Page.

We've all heard the whining from FBI/DoJ that releasing the unredacted texting of Comey, McCabe, Stzok, Page and the rest of the Russia Hoax gang would pose a risk to national security by exposing sources and methods or other classified information. Carlson convincingly demonstrates that that's all hogwash.