This is a form of rights absolutism that is just wrong.
Granting that churches do have the right for their members as consenting adults to engage in behavior that is dangerous to their own life (refusal of a blood transfusion) they have also NEVER had the right to kill 3rd parties by their practices - e.g. minor children of Christian Scientists or Jehovah's witnesses. My response would be that any religious practitioner should be free to exercise in a way that is dangerous to the public health of others as long as they are required to do it in complete isolation from the rest of society. The Hasidim and Catholics or Evangelicals that don't want to comply with public health rules should be required to quarantine themselves in return. The first and fundamental of ALL RIGHTS secured by the system is LIFE.
Like EVERY other right, the bound on religious liberty sits exactly where it impinges on someone else's right to exercise LIFE. This is absolutely no different than the speech right being properly limited by the crying 'fire' in a theatre logic.