> By definition, this is forced. Force means to make someone do something against their will.
Yes, but they aren't required to get the vaccine against their will. They have the choice to quit. That's what makes it a choice. If they had no choice to quit, then you would be correct.
> In this case the choice is be fired or take the vaccine.
Exactly.
> They obviously don't want to be fired, so they are being forced to take the vaccine.
Some choices are hard. That's life. As you wrote in the previous sentence, it is a choice.
> Yes, it isn't physical force, but it is forced none the less
No more forced than any other condition of employment.