Ah, my bad… There’s a core of people attached to Worldcon Intellectual Property who are supposed to support the hosting convention’s committee. This included Dave McCarty (who was removed from his position within WIP back in January as this situation evolved), and it seems like he pulled together a support team of experienced hands when it became clear that the Chengdu committee had not realized the extent of their responsibilities and couldn’t assemble a local Hugo committee capable of handling everything in the time available. So while it would be convenient to say “hey, the local committee is ultimately responsible for the way the Hugoa are run!” that’s only sort of true at the best-run of cons, and certainly not true in the case of Chengdu.
People who’ve been doing this for a long time and should have known better ran scared from the Chinese government’s censorship bureaucracy, for shortsighted and poorly justified reasons. The good news, such as it is, is that as that has been revealed the folks responsible have been removed from their positions, but it’s still disappointing to find out about. I worked with Dave McCarty in the runup to a previous Worldcon and I would have expected better of him.