It proves that they tried to end the Church-Age Dispensation over a hundred years too early and then use that as an excuse to tell everybody to stop joining the New Covenant with Jesus "for the forgiveness of sins" (Mt. 26:27-28) since the Kingdom was supposedly already here (meaning in the form of the F&DS). According to them, all a person has to do is listen to them blah, blah, blah, join their organizational-like ark and presto - "probably you may be concealed...".
I believe this:
The reality is that Matthew 24 and Revelation 6-18 do not refer to Church-Age Events.
True, portions of Matthew 24 have been fulfilled in the last 2000 years to some extent, (e.g., false teachers, false signs, false Christ's, earthquakes, wars), but the prophecy mainly describes the events of Daniel’s 70th Week.
Christ spoke of “the beginning of sorrows” in verses 4-8 as false teachers, wars, famines, pestilences, earthquakes. The “beginning of sorrows” refers to the general course of the church age. The things described in Matthew 24:4-8 have been evident throughout the age and have grown in intensity particularly in the last century.
But the beginning of sorrows more particularly refers to the first part of the Tribulation. And Matthew 24:9-30 clearly refers to events of the Great Tribulation that the church-age believers will not see. ("he that shall endure unto the end, the same shall be saved" is the WT mantra)
By contrast, Church age salvation is frequently spoken of in the past tense: Eph. 2:8, cf. 2 Tim. 1:9; Titus 3:5
The WT consistently applies scriptures designed for the Tribulation Saints to themselves since in their prophetic speculations, they believe they are living in a different time period than they actually are.
The bible says to "rightly divide the word of God". Of course this implies there is a way to wrongly divide it. The WT is a perfect example of wrongly dividing the word of God.