The facts we’re given about the abridgment do not support the idea that it was produced by Shakespeare.

We don’t know why the abridgment was created. The question the scholars are attempting to answer is who created the abridgment.

If the facts about the abridgment are true, it fits that the abridgment was produced by an actor. An actor is likely to both not have a full copy of the play and only accurate memory of one of the character’s roles.

A spectator is unlikely to have produced an accurate rendering of one of the character’s speeches.

Hamlet would not be improved by having an accurate rendering of one of the character’s roles and a poor rendering of all of the other character’s roles.