It is supposed to be recorded and published online by the organizers.
Suchmoon, I think you missed this post:
https://i.imgur.com/TKntahP.png
Reference Hashtalk / archive.today / web archive
Sounds to me like they won't be showing up for their conference time slot. They will be setting it up somewhere else, decide if there's any taping of the event (by who and post edits), who will be asking what question, etc..
I'm surprised the community hasn't picked up on this yet.
I thought this is his interpretation of the fact that the organizers had his speech already changed to a Q&A. He's just trying to put a spin on it making it sound like it's his decision. On the other hand, you could be right, it would be very risky for him to show up in a real Q&A, given his recent performance in creative writing and in Youtube recordings.