Maybe it is a coping method, IDK. I see LBH's with a WW rationalize why he does whatever the WW says, and I think it's more common for men with NGS who have been bullied or extremely manipulated. I don't know if he recognizes what he's doing at the time. Whenever I read a post from a LBH who is rationalizing why he gave in to whatever his WW said...... it sounds like excuses, to me. However, some guys can get offended and get defensive if they are accused of making excuses. I think you do it, in order to just tolerate living with her. Perhaps unconsciously, it gives you a way out, rather than having to deal with the bigger picture.
I think that bolded part is it. I really, REALLY did not want my XW to move out. As bad as life was after BD, leaving everything the same still would have been the easiest way forward. So I can definitely sympathize with the sentiments the LBS is feeling in this regard. BUT, maintaining the status quo is just extending the misery. There is no joy in a sexless, loveless marriage and continuing to let the WAS cake-eat and manipulate and play games is not the right path forward. There's no personal growth, and there's no repair to the relationship. Something has got to change in the situation, and the LBS is the one with the power to change things. Breaking out of the status quo is hard and even painful, but things have to change before healing and growth can begin.
