I'm sorry, but that's no more accurate than the statement about women without careers' being unwelcome on FR or in the GOP. I have many FRiends whose families have one income, some of them with even more children than my 8.
One of my standards as a conservative is to avoid "have to" statements. People make choices all the time, based on their personal values. Imagining that one is a helpless victim of circumstance, rather than a conscious agent, is not a recipe for sound mental health, good relationships, or political wisdom, in my opinion.
Right on! Right on.