I submitted the following as a comment on this story but it hasn’t appeared on the page yet, and anyway it’s a point worth making separately:
I have no view as to whether the plays are by de Vere or by W.S. But I think we should distinguish between those arguments for de Vere that are worth taking seriously (such as the similarity of passages in the plays and poems to earlier, unpublished writings of de Vere) and those arguments for de Vere that are not worth taking seriously (such as that no mere commoner like W.S. could possibly have been cultured enough to write the plays, that only an aristocrat could have done so). The first argument is striking (though not necessarily decisive) evidence; the second argument is mere class prejudice, easily counterexampled.