I have a friend who refused to purchase a crash cover from a well known crash because he said there was not enough left of the cover to calculate the exact rate for his rate exhibit of the stamps on the crash cover.
That's a legitimate line of reasoning to me.
He also said that exhibits were judged on the quality of the condition of postal history and the cover did not look pristine.
That's relative to context and the knowledge of judges, so probably not a key concern in his case unless they would suspect he's trying to sneak in one rarity to pump up his exhibit.
To me, the virtual cut-down version reinforces that the whole does not have much of a story to tell. Now, there is a puzzle there that can be investigated. And some of you are ignoring that there is no proof from a scan that the precancels belong on this fragment or not. Actually, I think there is evidence to indicate they belong. But it's still not a cover. It's two precancels stuck on a large piece.