Seriously? The "useful proposals" are spelled out in the next-to-last section. TLDR version: conference organizers need to stop tolerating this sort of thing.

Seriously? The "useful proposals" are spelled out in the next-to-last section. TLDR version: conference organizers need to stop tolerating this sort of thing. Everyone involved should "admit you screwed up, apologize, and tell me how you’ll prevent this in the future."