You should discuss your end-of-life options with your doctor. However, some medical professionals do not agree with voluntary assisted dying and the law grants them the right to conscientiously object. This means they do not have to agree to assess you. In this case, they are legally obliged to let you know so you can find another doctor willing to provide you with information.
Best practice in Australian healthcare is that you (the patient) are central to all decisions about your care and treatment. This is often called ‘person-centred care’. This means if your doctor will not discuss voluntary assisted dying with you, you’re entitled to look for another who will.