I’m talking about the realities of recruiting personnel and the demographic and structural changes that cause those realities
…your experience is not the broad reality.
You are now being dishonest, by insinuating that I have presented an argument from personal experience, and also that you have presented a structural argument.
Both suggestions are false.
You have given no structural argument. I have given one, and have not appealed to personal experience.
There are more jobs than people and workers
As I say, job openings is not relevant. A job opening is not a resource of limited supply.
Any employer may post any number of job openings at any time, and also may eliminate any of them, at any time, and also may eliminate any job, at any time, dismissing whoever is holding it.
Indeed, an employer may also post a job opening, and simply reject every applicant, or even ignore every one.
There is no system in which this is not the case,
Yes, there is, obviously. As long as distribution of basic needs is decoupled from the system of organizing labor, everyone may survive even if not providing labor.
and that has nothing to do with your bargaining power.
It does, completely, for reasons I already explained. Only one side of the bargaining relationship is being subjected to grave threat.