You have very good insight into your sitch. I think you are correct in that if he is not willing to look at his part in the breakdown of the M, then there is nothing you can do. You can want and hope to restore the M, but really, the person he is today is not good enough. After the hurt/anger he has caused you, you would at least need for him to own his part in it. He would need to be willing to look at the mistakes he made, why he made them, how he can change moving forward to avoid it from happening again, and of course express remorse for hurting you. It doesn't sound like he is taking those steps. That must be hard for you to accept.
This is exactly where I am with my W. I love her very much and I want to repair our marriage. But I don't like the person she's become over the past 5 months and I would never want to continue a relationship with her if this her "new" self. Personally I think this "new" self is just a phase and for a while I was just putting up with it and waiting for it to run its course. But I think she's in the thick of it and there's a lot more to come. Call it WW, WAW, or MLC, it's probably a combination of all three and there's only so much a person can take before they reach a breaking point. I'm trying to look at that breaking point as a positive way to lovingly detach further, but it's so hard.
M46 W48 M11 T14 S11 D8 BD: 2016/05/27 In-home separation: 2016/11/23 Nesting: 2017/06/11 W moves out: 2018/01/07 W goes public with OM: 2018/07/12 I ask for a divorce: 2018/12/14