His AI arguments seem to be of the "If you assume an AGI singularity is possible..." kind, which is suspiciously like assuming god exists, for completely arbitrary values of god, and then debating whether or not he cares enough to hate you.
Most software today sucks so badly it can't tie its own shoelaces without poking itself in the brain and falling over.
How do we know this isn't a general feature of software? Has there ever been a 100% bullet-proof non-trivial software system? Is there anything in the history of CS which implies that such a system is possible?
So suggesting that by (say) 2066 software will not only stop sucking but will be able to meta-improve itself with bug-free perfection to the point where it can eat the world seems curiously ungrounded.