I’m struggling with elder addiction and putting others in danger. Do I just have to accept this?

My dad is 76 yrs old and in denial of his opioid abuse and alcoholism. He no longer has narcotics, but he still drives to the liquor store and drives around while drinking. I have called the police who have never found him and didn’t really seem too concerned. I have called Arkansas state social services who told me there’s nothing they can do when addiction is involved. They advised I call the county prosecutor who could mandate rehab. Dad is terminal as he refused heart valve replacement (currently outlived prognosis) has infective endocarditis, COPD and we are waiting on a neurologist for him to be evaluated for Parkinson’s, rehab can’t handle his medical conditions, nor can someone be helped who doesn’t want it. I was also told by the hospital that withdrawal is very dangerous for elderly. He is currently in a nursing home getting IV antibiotics due to the vegetation on his heart and getting sepsis along with Covid in March. Dad also has a broken neck (fell while under the influence in 2020) they actually didn’t operate on him for several days as they weren’t sure he would survive withdrawal. He has chronic pain & spinal degeneration as a result of the neck break. The nursing home has him on time released OxyContin that he gets every 12 hours. He says it doesn’t do anything (he means he doesn’t feel high) but I have noticed drastic improvement in his pain. I’m terrified of him being discharged and being cut off from pain medication, going into withdrawal and binge drinking. Since he’s considered of sound mind, I strongly disagree but the facility says he has MCI, I can’t take away his truck. Disabling the truck would buy temporary time, but dad use to rebuild cars and is very knowledgeable on how to repair. He would also just buy another vehicle if needed. He has already had an accident that he doesn’t remember. He told the facility staff and myself in his care plan meeting that he will not stop drinking and driving. I reached out to our estate attorney who said there’s nothing I can do and I have to let him deal with the consequences of his actions. I understand that, I really do, but I don’t know what I would do if he hurt an innocent victim. Dad also falls very frequently as he’s also in denial about his lack of control over his body movements, then add alcohol to that which makes it worse. He has convinced himself that alcohol helps his tremors and weakness. He fell 5 times, that I know of, from 2/2-3/13, ending up in the ER with his head busted open needing 9 staples. The impact knocked two of the screws loose holding his neck hardware together. My husband and I offered to buy him a home down the road from us as he currently lives over an hour away. He refused. We set up home health and he told her to leave. He refuses absolutely everything. I broke down in the NH care plan meeting, as he accused me of lying about his living conditions. He sits in his excrement all day, refuses to rinse plates or dispose of food. Maggots are often present in the kitchen. I go over weekly to clean and shower him which he fights. I told him his choices are destroying me and I can’t continue to watch him do this. He told me I don’t have to come around, which I obviously know, but I can’t flip a switch to stop caring. I would worry about a stranger in this situation let alone my own father. For context, I had an abusive mother and my dad was my safety and sole source of love. I feel in a way I owe it to him to protect him like he did me. I have been brutally honest with him that he is going to severely hurt himself and likely suffer in pain as he also refuses to carry a phone or wear any devices. He doesn’t care, the addiction is the only thing he can think about. Even being 6 weeks sober. I realize this is mostly venting but I need to let it out to others who understand. I feel absolutely helpless and feel like I have exhausted all efforts to prevent him from hurting others.