Unfortunately, that's just not true. The vast mahority of people on lower income cannot aford to be choosy with who they work for. A great many higher earning software developers (HN's usual market) are in the same position.
I agree that encouraging the few people who can afford the luxury of being choosy to vote with their feet is a good thing, but don't assume everyone has that same "primary power".
Once you start taking family commitments, salary requirements, type of company etc into consideration, the pool of available jobs is certainly reduced.
If there is a positive from Covid, I'd hope is the acceptance of full remote work as an option or at most token office presence (e.g. Once every other week)
FWIW, my question about job switching was very much tongue in cheek as by now I'm not that bothered but the first few weeks were a massive productivity sink, more so than the usual when one starts in a new company with a different stack, etc...
Who we choose to work for and where we spend our money are the two primary powers every individual wields.