My father has been estranged from my life since I was a child. I am now in my 60's and already care for 2 other family members. Advice?

I wrote a very detailed letter about my father and the reasons he shouldn't be allowed to leave. That he wasn't able to care for self before the break, so he certainly couldn't now. I received a call from social worker saying she had talked to him and he plans to leave and he is his own RP. I told her it wouldn't be safe to do so. She said his issue sounds to be substance abuse so put him in rehab for that. I said alcohol wasn't his only issues. I said I would be refusing to pick him up because I knew I'd be taking him into an unsafe situation, and she just said we can't keep him being he is his own RP, he could leave, or even leave AMA. I have no idea what to do about this mess and want no part of a legal battle with this man. I may have to just walk away, and look very bad in doing so. In his mind he is leaving next Tuesday, and he can't even walk! How can they roll a man out to a taxi and send him away when he can't even walk?! That should be interesting for the taxi driver.

What does one do if his Dr does deem him ready to go? Will I then be obligated to pick him up to take him home? I've lost faith after talking with social worker, being her attitude was his only issue, being alcohol. It doesn't seem to matter to them I've repeatedly said he couldn't care for himself, nor could I go be with him. I've said it isn't safe to release, and would seem they think that's my problem. Another thing that bothers me is he hasn't actually seen a Dr. I've been told Dr's aren't visiting in person, and contact is by way of phone. Virus related. There isn't a doubt in my mind that should he go home, he will probably fall within the first week, messing up the surgery. I am telling these people all that has been suggested to me, here, but I sure feel unheard. I ask again, if they DO release him, claiming it's safe, do I then need to legally go get him?