As you well know, there is a U.S. federal government mandate to fire everyone who is not "fully vaccinated against COVID" (according to an ever-morphing standard of "fully vaccinated") come November 22.
What's the purpose behind it?
Sensible people recognize it can't be for health reasons. "Fully vaccinated" people can contract, transmit, and die of COVID, almost as much as people who refuse to take mRNA therapies. The disease is known to kill less than 1% of the workforce that's going to get sacked. It is eminently not reasonable to require vaccination to continue employed; no sensible person has, in the history of Mankind (before COVID) ever thought of requiring vaccination for regular adult employees of any government. Losing ten, twenty percent of the workforce is clearly much worse for the operation of the federal government than five percent of that workforce dying outright. It's an absurd order, no matter how you look at it.
What does this simple realization leave us with, as other motives?
It leaves us with the obvious — point deer, make horse. You know the story.
In other words: this is a compliance test being administered to federal employees. The point of the test is to force employees to choose, between loyalty to their principles as well as their perception of what's true, versus obedience against their conscience. People with a conscience will quit or be fired; they will be "boiled off". It is a purge of people more loyal to their values than to the regime. It is the removal of a the minority most likely to say "no, this is too far" in the face of worsening tyranny.
After this purge, who stays in the employ of the federal government?
Answer: the remaining workforce will be composed almost strictly of authoritarians who dutifully comply with orders, no matter how absurd or evil those orders may be. Then, in the absence of colleagues with a conscience, those people can then be ordered to do whatever unspeakable evil they are told, with little to no impediment or resistance from anyone in the remaining workforce.
Think about this. If the remaining workforce is ordered to, say, send you to a concentration camp, why wouldn't they do it? No judge, police officer, or prosecutor is going to intercede in your behalf — they're all jabbed and have conclusively proven their loyalty by sticking in the employ of the regime. It's not like anyone can stop them — all of their colleagues who would have protested such an order are long gone.
Are they going to do such a thing? We don't know — it's anyone's guess. What we do know, however, is that the effects of the mandate certainly facilitates it. If an order removes power from scrupulous people, the order's purpose is to empower unscrupulous ones. The purpose of a thing is what it does.
If you ever wondered why Lenin and Stalin indulged in purges, and you cannot help but notice parallels between those historical events and today's events, now you know first hand how those purges worked. I hope you also have it clear what came after them.