

Sure. If for whatever reason you need to re-edit something that you didn’t shoot yourself and you don’t have access to the source files. I suppose that would be one reason to edit the MP4 directly. (so for example, if you’re re-editing someone’s youtube video to make a remix of it for Tiktok). But I don’t consider that to be “professional” editing.
Professional editing is getting hired by a filmmaker (or creating video yourself) that you then edit into a completed work. And in those cases, I’d question why they’re either a) filming in a format like MP4 in the first place, or b) not making the LOG or ProRes source files available to their editor.




The writer of the video is (presumably) a paid, working writer. And as such they should know better.
it’s like a car reviewer saying “its a friction point that it won’t win the Grand Prix” when he’s reviewing an '81 Chevette.