People who work in grocery stores/gas stations in affluent areas typically commute from less affluent areas.
I’ve heard from actual coworkers who live in San Francisco, that even high paying engineering jobs have trouble making rent without roommates or dual incomes. Do they choose to live there? Yes. Can they move further away? Also yes. Do they want to commute 2 hours each way every day? Probably not. Add in taking your kids to school, and suddenly, the choice you think they had is really no choice at all.
Technically, we all have the option to quit our jobs, find a track of land in the middle of nowhere, and live off-grid, but do we? No. Choices aren’t as simple as “find somewhere else to live”.
Everyone has their own definition of what an acceptable choice is.
My point is that cost of living is not a choice. It is the actual cost that it takes to live in a specific area. Sure, where and how i live are my choice. But that has nothing to do with the actual cost of living in a given neighbourhood. And when you average it out, it balances out those who are frugal and savvy with their money with those who live beyond their means.
To say that everyone who makes 250k/yr and is living paycheck to paycheck is fat on avocado toast, and 15$ lattes is oversimplifying it.