>I don't think you can survive without a cell phone, no.
Landlines are an option, as are cheap, no-data plans. I saw a plan for unlimited talk and text for $15/month. Spend double that on a monthly plan for a phone, and you've still cut the technology monthly cost in half. There might be a library nearby you can use for free Internet.
>How do you work a job without childcare?
7% of dads stay home, 28% of moms stay home. I don't now for sure but I'm guessing that those numbers climb if the stay-at-home-ish parent has a part-time job. This is not an insignificant figure.
>Someone has to cover that cost.
Others can and do cover that cost and thus survive with less income. I don't share the base assumption that every family should be independent on their own and thus would not be expected to survive if they aren't. Some people don't have family (or friends, I guess?) to help with childcare. This is unfortunate, and can be helped via various means of social welfare, but I don't think it needs to be the standard for everyone.
>You can survive living in terrible conditions, sure. But is it actually surviving?
Based on the definition of the word? Yes.
[0]: https://www.pewresearch.org/fact-tank/2018/09/24/stay-at-hom...