I thought the WTS taught that the deadline of preaching being able to respond favorably to the WTS message, was until the great tribulation started. In 2021, "Our Kingdom-preaching work will not be finished until Jehovah says it is over. How much time is left for people to come to know Jehovah God and Jesus Christ? (John 17:3) We cannot say. We do know that until the great tribulation begins, any who are “rightly disposed for everlasting life” can still respond to the good news.Acts 13:48 How can we help these people before it is too late?
and in 2022:
As mentioned in the preceding article, the political elements of this world will soon turn on Babylon the Great, the world empire of false religion. (Rev. 17:16,17) This action will mark the beginning of the great tribulation. Will this result in a flood of new ones deciding to turn to the worship of Jehovah? No. To the contrary, (Revelation chapter 6) shows that at that critical time, people who are not serving Jehovah will seek protection from the political and commercial systems of this world, which are compared to mountains. Since those people will not take a stand in favor of God’s Kingdom, Jehovah will consider them to be opposers.—Luke 11:23; Rev. 6:15-17).