I think this is the real answer. All the odd details (seemingly totally accurate background that remains unchanged for 4 minutes, teleprompter reflection, no unexpected changes) and movements (standard Trump movements, only occasional hand movement for emphasis, wobbly weird head) are unusual for total AI generation, but the freaky hand-morphing and telltale light/dark shading makes the graphics look thoroughly AI. So feeding a real video into AI, especially to cover up something like hands, would explain it all.