Quick version....as I understand Preterism (which is the view being alluded to), most of the doomsday material in Revelation was in reference to the destruction of Jerusalem by Rome in 70 AD. Emperor Nero is identified as the anti-Christ, and the return of Christ is identified with the Roman army destroying Jerusalem. The old earth and heaven passing away is a representation of the Old Covenant between God and Man passing away; the New Heaven and New Earth are seen as references to the New Covenant in Christ.
I've been leaning toward preterism lately...and no, it's not a "liberal" doctrine.
and the return of Christ is identified with the Roman army destroying Jerusalem.
This is probably what some believe, but it's kind of a stretch, yes?
If this is how Revelation should be read, I'll make a motion to cut it from Scripture, because it obviously is irrelevant dead history that has no bearing on any of us. So, let's stop arguing about Revelation, and simply dump it from Scripture....(If these folks are correct.)