When a WL can continue to work while having a punter BF/husband, then both of them are suckers. The BF/husband because he's bitten off more than he can chew, only realised he couldn't comfortably afford to support the lifestyle of the WL GF/wife after hitching up with her. The WL is a sucker too because she chose the wrong guy to go with, one that cannot actually support her enough for her to quit working.
The situation would be very different if the guy didn't know about the WL background. Simply knowing about it and allowing it to continue, that point would be very hard to ignore.