If you're going to presuppose that abortion is killing someone, then your conclusion is logically apparent and uncontroversial. Clearly the issue in the abortion debate is whether it's killing or not, and you're begging that question here in order to seem somewhat smarter and superior, or to start a flame war.
This sort of post is absolutely unintellectual and unacceptable for Hacker News.
If you are going to presuppose that his post was intentionally a flame and act of superiority then your conclusion is apparent.
One which you would agree, should not be posted.
To preempt another meta-reply, I'll also state that the wittiness of this post is uncontroversial, and thus a valid post for the better humor of the community.
This sort of post is absolutely unintellectual and unacceptable for Hacker News.