Healthcare workers have a duty to their patients. Those patients include the willfully unvaccinated, but they also include immunocompromised individuals who can't mount a robust vaccine response. While that latter class of people might sound like an edge case not worthy of consideration in larger society, it is exactly the sort of edge case that's relevant in a healthcare setting.

If a healthcare worker isn't willing to receive a jab that could literally save someone else's life, they're in the wrong field. If they don't believe that vaccines are effective or safe or whatever, they can choose not to vaccinate; but they shouldn't be allowed to force that risk on their patients, especially since a "vaccine-hesistant" position is overwhelming at odds with the medical consensus.