I’m a Dispensationalist, pre-tribulation gathering of the Church as well.
You’re on the mark about the link b/w preterism and replacement theology.
Mixing up Israel and the church results in being mixed up.
If God never changes or makes mistakes then what do you do with Genesis 12:3 or half of the OT, especially Isaiah, Ezekiel, & Zechariah?
I’ll never understand the replacement theologians.