It is wrong, but let me ask you, would you get divorced over this issue? Would you get out because maybe you will lose what...12K a year at most?
Yes, many will leave, but I think it is more of the last straw than the just they are getting only 50% BAH.
It's a much bigger number than 12k.
For me over the remainder of my career it could be a difference of $399,000. If I move to the only other location I can be it would be $302,000 over the remainder of my career.
I can assure you there would be two immediate discussions in my household. 1) Does it make sense to get divorced looking at the entirety of the situation including potential difficulties with collocation? And 2) how soon can one of us get out instead of staying to retirement? That 300,000+ greatly shifts the cost/benefit ratio for my family in both of us staying in.
I would also be looking at how for one of us to get out of any current obligated service and leave the service now based on the fundamental change in the pay system under which we originally joined including a discussion with a lawyer in regards to a class-action gender discrimination lawsuit given it would disproportionately effect female service members.
Never in a million years did I think I would even consider divorcing my spouse, but this would certainly bring it into the conversation.