I do not see the link, sorry. From reading what you posted on the previous page, I have do not know their millenial views. They obviously have one, but what it is I cannot tell. If the author is correct, Jerome modified it which means he did not agree with it, I assume.
Frankly speaking, the content is mostly the man making up what he thinks the details mean independent of the text itself. Not that the points are invalid, but the imagery is to give a certain impression and he finds some spiritual meaning to it all instead of seeing it for what it was, IMHO. So I am not convinced the author being discussed had much insight as to the text. Most certainly nothing from anyone who knew John or knew someone who knew someone who knew someone who heard John talk about it.
I saw nothing futuristic in it because the author obviously being a futurist. I suspect if the subject being discussed really had futuristic views of any weight, they would be posted. Otherwise it sounds pretty much like every Tom, Dick and Harry nowadays telling us who Bablyon is and who the Antichrist is and who the harlot is. Of course, the text itself is often ignored in these guesses.
So my conclusion is the guys centuries ago might also not have figured out the answer. It might be that they knew nothing about the fall of Jerusalem in detail. That information is important in understanding the text same as knowing the details of Jesus conception, birth and so on are important to understand the prophesy of him in the OT. If one never knew he was in Egypt or born in Bethlehem, one would be missing important information.