Partial Preterism is a Partial Lie and Full Preterism is a Full Blown Lie

It is amazing how easy it is to agree with preterism (partial or full or whatever), as long
as you are willing to see God as unfaithful, non-covenantal, and totally unable to keep
His unconditional promises because those Jews (as a nation not as individuals) are just
so damn bad, and rejected their Messiah so horribly, that only judgment was left for
them (as a nation not as individuals).
Once you are willing to shaft, the descendants of Abraham, Isaac and Jacob, believing
preterism becomes the reasonable, well-thought-out thing to do.
Once you are willing to spiritualize all of the physical promises made in the last few chapters of
both Ezekiel and Zechariah the "church" in all its glory can become the focus of the promises
of God.
Once you are willing to ignore the principle of God preserving a remnant of His chosen people throughout scripture (a remnant of the nation not just individuals) you can say that His rejection of
the nation of physical Israel is complete and total.
Once you are willing to pay absolutely no attention to the Holy Spirit inspired songs of praise of both Mary and Zechariah (John the Baptist's daddy) that speak of a necessary physical blessing upon the nation of Israel, the nation that the Messiah of Israel came to save, you can accept preterism.
Once you are willing to completely ignore this part of Jesus answer to the question about Elijah coming before him, "And He answered and said, “Elijah is coming and will restore all things;" "IS" coming, so there is a partial and a yet future time, because there is a yet future 2nd coming.  So John the Baptist is not the full and complete and only fulfillment of this.
Preterism is a blindness based on the pride of man, period.  Done.