Good comment. This is where the Full-Preterism interpretation of the Olivet Discourse falls apart; and where the Dispensational interpretation of the Olivet Discourse similarly false apart equally as well. They both attempt to interpret the entire Matt 24-25, Mark 13, Luke 17, 21 either all pushed into the 70AD past or all into the 2012+ future; with no middle ground. Neither of them recognize or accept that the Olivet has two questions being asked and answered, one related to near-time events, and one related to future endtime events; and that Jesus went back and fourth between the two questions, supplying the answers.
True! I jokingly refer to myself as a "partial" partial preterist because I do see 70AD in the Olivet discourse. I believe Luke 21 is more focussed on the destruction of the temple question (70AD) and Matthew 24 is more focussed on the second coming question.