Hospice never gave any drugs to my mom. They acquired a great hospital-like bed for her so her head and/or feet could be raised. Different people came to visit a couple of times a day - religious, sociologists, personal care, nurses. They would talk to my mom, sing to her, read books to her. This was a Godsend because this was during the height of covid and family was not allowed into care facilities. We could only do Zoom meetings, phone calls, and tap on her window and wave while standing outside. We we finally allowed in on the day that mom died. and we were with her when she did.
You go on hospice because you are expected to die soon. They stop treating the underlying disease and concentrate on pain relief and comfort. e.g., if the person is having a bad day and family panics and sends them to the E.R., medical insurance probably will not pay for that visit and the person is taken off hospice. You either get treatment, or you get hospice. You can't have both. You can tell the hospice people that you want off of hospice and desire medical treatment again. And you are instantly switched back to that (your medical insurance goes back to paying doctors, but no longer pays hospice). You can even do this notification as you're running out the door to go to the E.R. At least that's how it works here in Colorado. This was all explained to us very clearly when we were investigating putting my mom on hospice. Which was suggested by her doctor and a second doctor reviewed my moms records and concurred.
My mom died of Alzheimers, so there was no pain involved. And it is hit or miss guessing how long a person will last in the end stages of this disease. But her doctor nailed the timeframe, so did the caregivers at the memory unit she was living in, and so did the hospice staff. They did not give mom any drugs, so they didn't "make their predictions come true". They got it spot on based only on their knowledge and experience. They told us when there were only a few days left. Spot on again.
I have nothing but respect for hospice, given our experience.