The conference accepted the talk. They gave the talk. The conference is now removing their videos after-the-fact. It's not hard to see how one could spin that as censorship.
The conference did _not_ accept the talk, they paid the conference so that they could give the talk.
Which they accepted, no?
They don't vet the paid presentations.
Really? Wow.
It is censorship. Not all censorship is bad. Black Hat has a duty to censor these asshats.