8.32. If the temple is now the Church, and the antichrist sits in the temple, does that mean in the Church?

Exactly. In the New Covenant, the temple of God is the Church:

“Know you not, that you are the temple of God, and that the Spirit of God dwelleth in you?”

— St. Paul, 1 Corinthians 3:16

“And what agreement hath the temple of God with idols? For you are the temple of the living God; as God saith: I will dwell in them, and walk among them; and I will be their God, and they shall be my people.”

— St. Paul, 2 Corinthians 6:16

When St. Paul writes that the man of sin will “sit in the temple of God showing himself as if he were God” (2 Thess. 2:4), the Fathers interpreted this to mean within the Church, not a rebuilt building in Jerusalem.

“Who opposeth, and is lifted up above all that is called God, or that is worshipped, so that he sitteth in the temple of God, shewing himself as if he were God.”

— St. Paul, 2 Thessalonians 2:4

This fits the sedevacantist understanding: a false pope, claiming divine authority, sits in what was once the holy place (the Vatican), teaching error, demanding obedience, and mocking the faith—while still appearing as a shepherd.

We’re not claiming Leo XIV (or any modern pope) is the Antichrist, but this structure is certainly preparing the way—if not already part of that system.