Regardless of the moral issue, due to EMTALA hospitals are legally required to care for unstable patients regardless of whether they made unhealthy choices. Changing that would require an Act of Congress.
Get vaccinated.
1. https://www.timesofisrael.com/health-ministry-chief-says-cor...
2. https://www.haaretz.com/israel-news/israel-vaccine-data-how-...
They have to do something because the vaccine just isn't stemming the tide!
Even at 100% vaccination rate there would still be issues, less issues, but far from Zero.