I've written multiple articles concerning this topic that I will link below. Here, for those who prefer, is a video from 119Ministries addressing the topic. (I love their willingness to tackle, very Biblically, the hard topics.)
Other sources for this issue:
Yep. Sacrifice is an Ordinance.
Has the Application of the Law Changed?
Sacrifices in the Millennial Kingdom
I did not take the time to watch their video as every time I have in the past, it becomes very obvious to me that they have a very custom set of spectacles that add things to the word that just aren’t there, and somehow ignore things that are as plain as light and dark in whatever language you could examine them in. I got enough of that in Corporate Christianity.
However, I did take the time to read all of the links you posted. You are a very gifted and gracious writer, Pete. That being said, you failed to address the issue in real time of sacrifices, today. Yes, they were commanded before Christ as a physical, non metaphorical sacrifice. Yes, they will be utilized in some physical, non metaphorical form in the Millenium.
But what about now? Your logic for why not now revolves around Christ being the sacrifice. This is a Christianity bias that accepts the (at least temporary) cessation of a Torah command that is at the forefront of Torah observance. This is the nucleus of righteousness in Torah.
So the premise and challenge remains. If God and Christ hold the Torah to the level you and others have claimed, (that not one jot or tittle would change til heaven and earth pass away) there is no way, that the sacrifice of Christ changes anything regarding animal sacrifices, by your own position. OTOH, IF the sacrifice of Christ = the cessation of animal sacrifice for whatever reason, there is a big problem with your position.