It is really worth considering that this conference used a blind review process[1]. Subsequently, there is zero chance that the reviewer's decisions were influenced by racism or sexism. As a society, we need to consider the implications of what is going on here. In what way could this move possibly be said to be anti-racist/anti-sexist? It just isn't. If anything, abandoning your speakers because they are male/white…
'Speaker information will be used in any final reviews necessary to break ties and bring a balance to the speaking line-up.'