Why live somewhere and be dependent on subsidies if you can move and be independent?
I lived in the Bay Area for 17 years. Enjoyed the time but it’s “for a season”. It’s common for folks in the Bay Area to look at other locations as “lesser”. In reality, it’s about tradeoffs.
For those low wage earners, you're not going to get a large deal of independence by doing the job in Des Moines compared to San Francisco. You'll still be scraping by, possibly saving a little bit but not much.
It depends on what you mean by "low wage earners". You can own a home and save money in virtually all of the United States as a teacher or someone doing anything in tech. You could also be a single income family if one partner makes $150k.