Anon,
Not all MLCer's are the same. You could have been describing my XH to T, so I get your confusion.
Never Monstered, was always kind, never mean, polite, no ow, divorce done friendly, the whole shebang.
I doubted for a long time he was not in a MLC. He just didn't fit what I was reading here. Maybe he really did just fall out of love with me.
UNTIL the day he rewrote history. I can't tell you how shocked I was, he not only talked about something he claimed I said (which I never would, even in anger), but he put people in it that weren't there.
When I said what I said, it was no way near how he said I said it, but we were at home sitting on the couch, just the two of us. Nope, we were in the kitchen and so and so was there and they were shocked you would say that too by the look on their face.
There was no convincing him but I thought, ok this IS a MLC. That did not happen.
Also a few weeks after BD I made reference to something he said the night of BD, he immediately looked horrified and said.."I never said that, I would never say something like that!"
But he did.
I don't think SS sells any fantasy, but I do agree there probably are people on here who's spouse's are not in MLC. Most are, but I wouldn't think all. Sometimes it's just easier to believe that, than that their spouse just walked away. There are some marriages where one or the other really wasn't happy, for what ever reason.
I think you will just know in hindsight.
Still I believe a lot of the advice on here is good for either a walk away spouse, or a Midlifer.
Protect your finances, detach, live your life 'as if" they are not coming back and be kind to yourself. Concentrate on you and make your life the best you can. Let them go.