In a rare case like Aruna Shanbag, I would say it needs to be considered.. When the victim is beyond cure, and death is the only solution to end the pains.. But again, even in her case, it was said that her internal senses were working, she was just unable to communicate to the outer world because she had lost all those abilities. So I am not sure if that is justified
In this hotel case, Shibani did the right thing. ATU does not have authority to take that decision, neither they can let people kill themselves openly like this. Its not allowed by law. And they just can't assume that those affected by the virus can't be cured when the top notch pharma companies are working on finding a medicine.