It's also false that a stay at home has essentially resigned themselves to ruin in the event of divorce/disagreement. Someone who has been a stay at home long enough to be unemployable, in the vast majority of states, will be rewarded with alimony and if applicable child support to the point they will easily be taking about 50% of the spouse's salary for long enough to retrain.

Of course the spouse has the risk the other ex-spouse will sabotage themselves and end their incomes to avoid paying the order, at which point they may be thrown into prison if they are found. But are they worse off than the employee who can be fired at a moment's notice and go broke by a boss who isn't sabotaging himself at all and bound by no such judicial order? Maybe so, but it's not by some gigantic long shot.