So I guess baptism is no longer the "mark for survival".
The JW article you linked speaks for itself, but it needs to be read.
The "man with the ink horn" scripture that you reference in your post is only one of many scriptures that describes some facet of salvation that the Bible says is to occur at Armageddon. There are also many other scriptures that explain other aspects of being saved. The teaching of salvation from God's angelic executioners is a Bible doctrine that does not depend on WT interpretation of the Bible.