Well, to be fair, I think the author is trying to provide newer arguments, as the "this is stupid, a huge invasion of privacy, and against Facebook's TOS" cases have already been made pretty heavily on the front page of Hacker News.
Further, if it's not plainly obvious that the practice is wrong to someone, it seems like stating the fact probably won't do much to convince them, so maybe alternative arguments might be more productive.
Further, if it's not plainly obvious that the practice is wrong to someone, it seems like stating the fact probably won't do much to convince them, so maybe alternative arguments might be more productive.