I think this is true, but in my experience almost every place I worked at, even those that didn’t advertise being “Remote” had pretty flexible policies on remot

I think this is true, but in my experience almost every place I worked at, even those that didn’t advertise being “Remote” had pretty flexible policies on remote work for engineers, at least in my anecdotal experience in San Francisco. 90% of the time if I asked my manager to take a week and work remotely from X location the response was “Cool, whatever”. It was always an option but now they are advertising it as a perk. Especially the ads that say you can work one or two days from home per week, which is kind of ridiculous because everyone was already doing that anyway.