The interpretation was well-known at the time it was spoken by the Savior and written by the Apostles. The Institutionalized Church, being devoid of spiritual discernment did not understand nor accept, and deliberately or through disuse, the doctrine was withheld from those seeking salvation truths by those claiming to teach The Faith. (Romans 1:18)
And it is not at all true, as you have mistakenly assumed, that this doctrine has not been lknown throughout history. It simply has been quashed by those whose entire fabrication would have been unraveled by it.
You may look at old hymns prior to Darbyism and Schofield to see that it is taught by psalms and hyms and spiritual songs, under those led by The Holy Ghost, who allowed the Word of The Christ to dwell in them richly in all wisdom, teaching and admonishing one another with those hymns.
But never discount that not only has The God progressively revealed more and more of his truths through faithful prophets, but has also continually revealed applications of those revealed truths through Spirit-controlled expositors, according to the times for which they were fitted. Jesus upset a whole institutionalized God-rejecting religios system. So did Peter Waldo. So did John Hus. So did Martin Luther. So did John Nelson Darby. So did Cyrus Ingerson Schofield. That type of preacher is still crying out today, as the love toward The God of the hoi polloi grows ice-cold, through the overspreading of abomination, as told to Daniel, but not understood by him; and sealed until the time of the end (Daniel 12).
You will either understand this, or you will reject it. Choose now whom you will serve.
Do I understand you right, are you saying (like Safguns) “apostasy” in 2 Thess. 2:3 means the pretrib rapture?