The idea is that He is not abandoning Earth. He is pulling his people out of harm’s way before unleashing judgement... sort of like He did for Lot and Noah.
That view fails to take into account passages like this:
Rev 20:4 And I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years.
So an awful lot of Christians will be martyred during the Great Tribulation, the time of the beast and his mark. So what’s the point of pulling ANY of them out? Those martyrs will obviously be in harm’s way.
Noah and Lot remained on the Earth. God made a way for them to survive.