I would argue that passing insecure systems off as secure, like what we saw with Tesco today, would count as unethical. That's a case where you can cut corners and nobody might notice for a while, and the system in question seemingly works.
Yes, I agree that would be unethical and should be a career-killer. But that's a decision arguably made possible by several layers of incompetent management, not just one manager or coder. Higher-level managers can say that they aren't expected to know of the technical details. And coders can blame the result on legacy systems that they had to interact with. The buck does not stop as cleanly at one person as it does in the case of the writer who plagiarizes/fabricates.
Moreover, journalistic writing is very public. Your byline is attached to a piece that was seen by at least a few hundred, if not hundreds of thousands of people. If you get called out on fabrication/plagiarism, well, people are going to know about it. Editors and proofreaders rarely get called out by name for mistakes. But that's irrelevant, since an editor/proofreader isn't really in the position to fabricate/plagiarize in a writer's piece...they're there to edit/fix/separate-the-chaff-from-the-wheat-and-keep-the-chaff
