My aunt was schizophenic.To answer your question, I believe that schizophrenia has different severity levels. Because I used to know two local people who were schzoids. One was a lady who was another tenant in my building complex. The meds took away most of the voices in her head. But the other schzoid was a man who was also homeless. He took meds too but the voices in his head persisted and were sometimes intense. Most likely that's why he stayed homeless.
She jumped out of her 6th story apartment window at 75.
She was on all kinds of medication for decades.
It's a tough call.
But I tend to lean towards personal choice.
If you yourself thinks it's time to go, then yeah, I think you should be able to go peacefully and with dignity.