No more than most, less so than others. Each partner gets to collect their due "benefits" according to what they put in. Their contributions are based on their individual, not joint, incomes. The survivor can collect the greater of the two SS pensions.
But the so-called repeal of the income tax "marriage penalty," - which taxed marrieds at a higher rate than singles - was designed to give relief to dual income marrieds only. Married folks filing jointly with a stay-at-home spouse continue to enjoy higher tax rates than singles and dual income couples who file seperately. A little bit of social engineering slight of hand designed to prop up the daycare industry and discourage stay-at-home moms.