Has it ever occurred to you that those who would be willing to quit a job before being forced into vaccination might have really excellent reasons for doing so? Just because you can't think of what those might be doesn't mean they don't have them.
By the way, your remark about nurses who quit over forced vaccination is particularly myopic and offensive. Shame on you for making such unwarranted and ugly assumptions about the passion (and by extension, character) of these nurses. You know absolutely nothing about their motivations and passion.
My wife is facing this very circumstance at her job. She has almost twenty years working for her company and now she must leave it, not because she is a bad worker, not because she cannot any longer do the job, but because the government has, without proper justification, and in open, direct violation of the Canadian Charter of Rights and Freedoms, stripped her of her right to decide what does and doesn't go into her body, extorting her through her employer to bend the knee to an objectionable medical procedure. We have looked for ourselves very carefully at many actual medical research abstracts, statistics from our own government health agencies, listened to expert clinicians and epidemiological specialists from all over the world and we are convinced by all that we have discovered that taking the vaccine is unnecessary and, for several reasons, also extremely foolish.
More than this, it is an utter trampling of our personal liberty for our government to extort, through our employers, our compliance with its vaccine mandate. We are not against vaccines. But we are against "vaccines" that are using the general public as guinea pigs; that have a growing number of very dangerous and even fatal adverse reactions, the size of which far exceeds the level at which any prior vaccine would have been scrapped as ineffective and dangerous; that act in the body in ways no prior vaccines have ever done, a spike protein replicating and saturating various tissues all throughout the body; that are now proving to have only a mitigating effect on the virus, not a curative or preventative one, needing an endless series of booster shots to support. And so on.
As far as we are concerned, those who have been vaccinated are extremely and dangerously misinformed and no amount of false moralizing from them about "the vulnerable" convinces us in the least to follow their ill-advised example.