I don't really take your point here? You're saying you feel the author should justify the reasoning behind their moral position?
If you genuinely are unaware of the issues, it's a very easy topic to research. Heck, just put "AI" into HN and half the articles will cover some part of the topic.
Should we try to guess which of of the many objections belong to the author?
It's better to ask than to assume.
I didn't see that commentor truly asking. I can ask them, but I know that the topic will have dried out by the time o get an answer.