There was a campaign from 2013 to 2017 by rightwingers to game the Hugos by buying non-attending memberships to worldcon and nominating works they deemed to be sufficiently non-woke. Thing is, there’s one nominee they couldn’t game: “none of these.”
So most of the time where the only nominees were gamed, membership voted that there was to be no award in that category that year. The exceptions were authors that likely would have been nominated anyway due to name recognition, like Neil Gaiman.
The award can maintain its integrity despite the committee’s lack thereof if Worldcon members vote for no award to be given in the categories leadership fucked with.