And that remains correct. The temple was destroyed long ago but none of events of the actual Olivet Discourse have yet happened.
Mat 24:1-2 is a brief conversation about destruction of temple. This is pre-Olivet Discourse. The destruction of the temple does not happen anywhere near the Olivet Discourse events which is why Jesus said nothing at all about Jerusalem or the temple being destroyed near or during the Great Tribulation.
Mat 24:3-Mat 25:3-46 is the Olivet Discourse which is about the Great Tribulation, the events before it begins, the events during it, and events that take place after the Great Tribulation has ended followed by many different stories and parables that teach about the second coming.