This doesn't address the most controversial aspect, which is that AI would go foom. If extreme fooming doesn't occur this isn't nearly as big an issue. That is an issue where many people have discussed it and not all have come away convinced. Robin Hanson had a long debate with Eliezer over this and Robin was not convinced. Personally, I consider fooming to be unlikely but plausible. But how likely one thinks it is matters a lot.