Using myself and my dominant W as an example, she would be angry/cross my self esteem boundary, and I would resent it. She would resent that I did not fight back, and so negative energy built up on both sides. Healthy boundaries are important, I read. If your husband is losing his self-esteem, he himself (I don't think you can help) will need to work on being more assertive.
This is using my sitch as a reference. What is the power balance in your R?