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.

I have a structural argument. You gave none.

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, because only one side of the bargaining relationship is being subjected to grave threat.