I do not agree that it has only to do with false prophets. "All these things" imo refers to the things of verses 4-9 which did happen in the generation of the disciples, including the destruction of the temple (which is one of the questions they asked regarding Jesus' proclamation in verses 1-2.
It seems in your post you were dealing with the abomination of desolation, rather that what "all these things" was applied to.
The temple of the Lord according to Peter, is the full invisible church. 2 Peter: 4-5 As you come to him, a living stone rejected by men but in the sight of God chosen and precious, you yourselves like living stones are being built up as a spiritual house, to be a holy priesthood, to offer spiritual sacrifices acceptable to God through Jesus Christ.
And Paul Eph 2:19-22 So then you are no longer strangers and aliens, but you are fellow citizens with the saints and members of the household of God, built on the foundation of the apostles and prophets, Christ Jesus himself being the cornerstone, in whom the whole structure, being joined together, grows into a holy temple in the Lord. In him you are also being built together into a dwelling place for God by the Spirit.
As individuals we are a temple of the Lord for the Holy Spirit indwells us. I would not say it is our places of worship as buildings because they contain both believers and unbelievers. Although that is one of the significant places where the wolves in sheep's clothing pose as shepherds.
But God also has a temple in heaven. Rev 11:19 Then God's temple in heaven was opened, and the ark of his covenant was seen within his temple. There were flashes of lightning, rumblings, peals of thunder, an earthquake, and heavy hail.
That may have been the temple Jesus was referring to in Matt 24 and Paul in 2 Thess. I would have to study it more. But if that is the case it means that the man of lawlessness claims to be God, claiming God's throne and temple as his.
When Jesus quoted Daniel and said "let the reader understand" he did not mean understand him but understand Daniel.