I think he means "mass sterilisation of a population" Vs "mass murder of the same population", which is genocide either way, and then he would opt for the faster method.
Or something. Feels extra creepy discussing which genocide is better with the ongoing genocide in Gaza.
I find it a bit interesting that it isn't more wrong. Has it ingested large tables and got a statistical relationship between certain large factors and certain answers? Or is there something else going on?