I have discussed this before on JWN. The WTS tries to dance around the concept that non-jws are going to be destroyed at Armageddon. But using Ezekiel 9 they have stated that only people baptized as jws will survive.
***Isaiah Prophecy book p-2 chap. 17 pp. 254-255 par. 14 Foreigners Gathered to God’s House of Prayer ***In 1931 the position of these was better understood when the book Vindication was published. As part of a verse-by-verse discussion of the Bible book of Ezekiel, Vindication explained the vision of "the man" with the writer’s inkhorn. (Ezekiel 9:1-11) This "man" is seen going through Jerusalem and marking the foreheads of those sighing and crying over the abominations being committed there. "The man" represents Jesus’ brothers, the remnant of anointed Christians alive on earth during the time of judgment of antitypical Jerusalem, Christendom. Those marked are the other sheep living during that time. In the vision they are spared when Jehovah’s executioners bring vengeance on that apostate city.
*** w07 7/1 p. 13 Highlights From the Book of Ezekiel—I ***9:3-6.Acquiring the mark—the evidence that we are dedicated, baptized servants of God and that we have the Christian personality—is essential for surviving the "great tribulation." (Matthew 24:21) Anointed Christians, represented by the man with the secretary’s inkhorn, are taking the lead in doing the marking work, that is, the Kingdom-preaching and disciple-making work. If we want to retain our mark, we must zealously help them in this work.
***Knowledge book kl chap. 18 p. 180 par. 21 Make It Your Aim to Serve God Forever ***Bible prophecies show that God views such ones as marked to survive the execution of his judgment soon to come upon this wicked system of things. (Ezekiel 9:1-6; Malachi 3:16, 18) Are you "rightly disposed for everlasting life"? (Acts 13:48) Is it your earnest desire to be marked as one serving God? Dedication and baptism are part of that mark, and they are essential for survival.
*** w82 2/15 p. 31 par. 18 "What Prevents Me from Getting Baptized?" ***Just ahead the separating of the "sheep" from the "goats" will come to a conclusion. None will be left on middle ground when God brings the "great tribulation" to sweep away "those who do not know God and those who do not obey the good news about our Lord Jesus." (Matthew 25:31-46; 2 Thessalonians 1:6-9) Only those ‘marked’ for salvation will survive into his new order. (Revelation 7:3, 4, 9, 14; Ezekiel 9:2-6) How happy will be those who have submitted to this ‘marking’ for survival because of being accepted into a dedicated relationship with Jehovah God, as symbolized by water baptism, and continuing in integrity on the narrow road that leads to life!—Matthew 7:13, 14.