“I don’t remember liberals pushing fast food on society back then.”
The post you’re responding to mentions prepared food as well as fast food. That’s what I remember most. More prepared meals became available in grocery stores so working women didn’t have to cook for their husbands and/or kids. It was marketed that way.
I remember some discussion about "timesaver" foods or partially-prepared foods (mixes, that kind of thing -- add water and stir, heat to 240F or whatever). Frozen foods.
I guess that all had a big time-saving pitch, and would let Mom go looking for a part-time job after the kids had all started school. When we were all in school, when my baby sister turned six, my mom went back to work as a nurse. She'd been an RN in England during the War. Just an office nurse-helper, sort of a nurse's aide in the States, but she could pull in an extra $300/month when the old man's pay (before he retired) was bumping along about $600 as an active-duty USAFR officer with 12-14 years or so in grade, back in 1961. After he retired, that extra paycheck really helped. Millions of women were pulled out of the home like that, by the need to save up for kids' college tuition and their own retirement.