I agree that ... must be ... in every case
On the contrary, CK, we agreed after some disharmony that circumstances alter cases.
You've been known to stir the pot. Perhaps you're now stotting to startle us a bit, and purring with pleasure. This is referred to as purring the stot.

most academics can spot outright plagiarism at 50 paces
Don't be so sure, CK. See post #41255, noting that no one had noticed a deliberate but unattributed quotation.